Database

• Ladybug (⭐534) - an embedded graph database built for query speed and scalability. [MIT] website

Miscellaneous

• xjb (⭐26) - A fast float to string algorithm. [Apache-2.0]

Articles

• cpp17_in_TTs (⭐1.2k) - Descriptions of C++17 features, presented mostly in "Tony Tables".

GUI

• Brisk (⭐326) - Cross-platform C++20 GUI framework. MVVM, reactive capabilities. Scalable, accelerated GPU rendering [GPL/Proprietary] website

Concurrency

• dispenso (⭐237) - A high-performance C++ library for parallel programming with thread pools, parallel for loops, futures, task graphs, and concurrent containers. [MIT]

• TooManyCooks (⭐181) - High-performance C++20 coroutine framework with advanced hardware detection features. [BSL-1.0]

Data visualization

• Plotly++ (⭐129) - A C++ interface to the Plotly.js figure spec, for creating interactive data visualizations. [MIT]

Networking

• wspp (⭐20) - a zero-dependency single-header, modern WebSocket client & server, ws/wss library. [MIT]

Frameworks

• sfl library (⭐148) - a header-only C++11 library that provides several new or lesser-known containers, some of which can be used in C++20 constant expressions. [zlib]

Networking

• CZMQ (⭐1.3k) - High-level C binding for ØMQ. [MPL2] website

• Zyre (⭐940) - Local Area Clustering for Peer-to-Peer Applications. [MPL2]

Scripting

• MicroQuickJS (⭐5.6k) - MicroQuickJS (aka. MQuickJS) is a JavaScript engine targeted at embedded systems. [MIT]

Coding Standards

• F-35 Fighter Jet's C++ Coding Standards

CLI

• Argy (⭐25) - Command-Line Argument Parsing Library for Modern C++ — Simple, Intuitive, and Header-only with Zero Dependencies [MIT]

Containers

• librb (⭐13) - C implementation of ring (circular) buffer, with full thread awareness that allows for concurrent read/write and can automatically grow in size when needed. [BSD] website

CSV

• zsv (⭐368) - The world's fastest (simd) CSV parser, with an extensible CLI. [MIT]

Database

• sqlgen (⭐171) - A reflection-based ORM and SQL query generator for C++-20, similar to Python's SQLAlchemy/SQLModel or Rust's Diesel. [MIT]

Data visualization

• mathplot (⭐47) - C++ header-only graphing and data visualization with modern OpenGL. [Apache-2.0] website

Game Engine

• IX-Ray Platform (⭐338) - Fork of X-Ray 1.6 engine that aims to improve gaming experience and simplify development of modifications. [Modified MIT/non-commercial only]

Image Processing

• PlutoFilter (⭐200) - A single-header, zero-allocation image filter library in C. [MIT]

Math

• libfixmath (⭐841) - Cross Platform Fixed Point Maths Library. [MIT]

• mexce (⭐3) - A single-header, dependency-free JIT compiler for scalar mathematical expressions that generates optimized x87 FPU machine code. [BSD]

• OMath (⭐176) - Cross-platform modern general purpose math library written in C++23 that suitable for cheat/game development. [ZLIB]

• sebsjames/maths (⭐7) - A templated C++20 math library which emphasizes convenience and pleasure for the client programmer (used in mathplot (⭐47)). [Apache2] website

Regular Expression

• TRE (⭐878) - The approximate regex matching library and agrep command line tool. [BSD-2-Clause]

Scientific Computing

• volesti (⭐181) - High dimensional sampling from truncated distributions, convex optimization and volume computation.

Sorting

• x86-simd-sort (⭐998) - C++ template library for high performance SIMD based sorting algorithms. [BSD-3-Clause]

Compiler

• Fil-C - a fanatically compatible memory-safe implementation of C and C++.

Coding Standards

• Autosar C++ 2014

Websites

• cppstat - A site that lists C++ features and their support by compilers and standard library implementations in an accessible way.

• CompileBytes C++ Compiler – Online C++ compiler and interactive code execution environment.

JSON

• meojson (⭐151) - Next-gen C++ JSON/JSON5 Serialization Engine | Zero Dependency | Header-Only | Unleash JSON Potential. [MIT]

Frameworks

• PhotonLibOS (⭐1.2k) - A comprehensive C++ framework featuring efficient user-space threading (coroutine with work-stealing), I/O, networking, RPC, HTTP, etc., and used extensively in Alibaba. It is compatible with C++ 14/17/20/23, Linux, MacOS, x86-64, ARM64, gcc and clang. [Apache2] website

Debug

• utl::profiler (⭐330) - Singe-header profiler for C++17. [MIT]

Game Engine

• Hazel Game Engine (⭐13k) - Hazel is primarily an early-stage interactive application and rendering engine for Windows. [Apache-2.0 license]

Graphics

• olive.c (⭐2.3k) - Simple 2D Graphics Library. [MIT]

Logging

• Abseil Logging - The Abseil Logging library provides facilities for writing log messages to stderr, files, or other sinks. [Apache-2.0]

• ng-log (⭐92) - C++14 library for application-level logging. [BSD-3-Clause]

Containers

• sqlitemap (⭐8) - Persistent map backed by SQLite. [MIT]

CSV

• rapidcsv (⭐1k) - An easy-to-use, header-only C++ CSV parser library. [BSD-3-Clause]

GUI

• nana (⭐2.5k) - Nana is a cross-platform library for GUI programming in modern C++ style. [Boost]

Math

• cml (⭐84) - The configurable math library. [Boost]

Miscellaneous

• Reaction (⭐615) - A lightweight, header-only reactive programming framework leveraging modern C++20 features for building efficient dataflow applications. [MIT]

Debug

• CrashCatch (⭐72) - Single-header crash reporting for C++ that logs stack traces and creates .dmp and .txt crash dumps. [MIT] website

GUI

• NAppGUI (⭐674) - SDK for building cross-platform desktop apps in ANSI-C. [MIT] website

Miscellaneous

• AsmJit (⭐4.4k) - Low-latency machine code generation. [Zlib] website

• Hexi (⭐285) - Header-only, lightweight C++ library for binary streaming & serialization. [Apache-2.0/MIT]

Miscellaneous

• SLJIT (⭐1.1k) - Platform independent low-level JIT compiler. [BSD] website

PDF

• QPDF (⭐4.8k) - A tool and C++ library for content-preserving transformations of PDF files. [Apache-2.0] website

Miscellaneous

• palacaze/sigslot (⭐872) - A simple, header only, C++14 signal-slots implementation [MIT]

Math

• utl::random (⭐330) - A C++17 header-only library implementing fast random for Monte-Carlo simulations & gamedev. [MIT]

Miscellaneous

• minja.hpp (⭐203) - A minimalistic C++ Jinja templating engine for LLM chat templates. [MIT]

Artificial Intelligence

• Txeo (⭐52) - A modern C++ wrapper for TensorFlow. [Apache]

Online Compiler

• OneCompiler - An online compiler supporting over 70 programming languages and database systems.

Data visualization

• gplot++ (⭐30) - Cross-platform header-only C++ plotting library that interfaces with Gnuplot. [MIT]

Compiler

• PCC (⭐124) - A very old C compiler. Supports C99.

Build Systems

• Sconsolidator (⭐24) - Scons build system integration for Eclipse CDT.

Websites

• Udemy C++ Courses and Tutorials

Miscellaneous

• KOMIHASH (⭐274) - Very fast, high-quality hash function, discrete-incremental and streamed hashing-capable. [MIT]

Frameworks

• Siv3D (⭐1.2k) - Siv3D (OpenSiv3D) is a C++20 framework for creative coding (2D/3D games, media art, visualizers, and simulators). [MIT] website

Debug

• Hippomocks (⭐200) - Single-header mocking framework. [LGPL-2.1]

• IceCream-Cpp (⭐737) - Never use cout/printf to debug again [MIT]

Math

• MATIO (⭐388) - MATLAB MAT File I/O Library. [BSD-2-Clause] website

Scripting

• nanobind (⭐3.4k) - tiny and efficient C++/Python bindings. [BSD-3-Clause]

Serialization

• BitSerializer (⭐28) - Multi-format serialization library (JSON, XML, YAML, CSV, MsgPack) [MIT]

Yaml

• fkYAML (⭐132) - A C++ header-only YAML library. [MIT]

• LibCYAML (⭐318) - C library for reading and writing YAML. [ISC]

• libfyaml (⭐317) - A fancy 1.2 YAML and JSON parser/writer. [MIT]

Miscellaneous

• CPP-JWT (⭐430) - JSON Web Token library for C++. [MIT]

• MPark.Variant (⭐707) - C++17 std::variant for C++11/14/17. [BSL-1.0]

• SafetyHook (⭐649) - C++23 procedure hooking library. [BSL-1.0]

• xxHash (⭐11k) - Extremely fast non-cryptographic hash algorithm. [BSD-2-Clause] website

• xxhash_cpp (⭐185) - Port of the xxhash library to C++17. [BSD-2-Clause]

Compiler

• AMD C++ Compiler - Developed by AMD.

Frameworks

• AUI (⭐523) - Declarative UI toolkit for C++20. [MPL2]

Scripting

• Luau (⭐5.3k) - A fast, small, safe, gradually typed embeddable scripting language derived from Lua. [MIT] website

Yaml

• LibYAML (⭐1.1k) - A C library for parsing and emitting YAML. [MIT] website

Miscellaneous

• libONVIF (⭐198) - Yet another ONVIF library. [GPL-3.0]

• libpopcnt (⭐360) - Fast C/C++ bit population count library. [BSD-2-Clause]

• rain (⭐130) - The fastest 128-bit and 256-bit non-crypto hash, passes all tests, and under 140 source lines of code. [Apache-2.0]

• simdzone (⭐136) - Fast and standards compliant DNS zone parser. [BSD-3-Clause]

Database

• TidesDB (⭐472) - High-performance, durable, transactional embedded storage engine designed for flash and RAM optimization. [MPL-2.0] website

Scripting

• JerryScript (⭐7.4k) - Ultra-lightweight JavaScript engine for the Internet of Things. [Apache-2.0] website

Miscellaneous

• tiny::optional (⭐143) - Replacement for std::optional that does not waste memory unnecessarily. [BSL-1.0]

Physics

• QuarkPhysics (⭐276) - A 2D Soft Body and Rigid Body Physics Engine. [MIT]

Regular Expression

• Vectorscan (⭐654) - A portable fork of the high-performance regular expression matching library. [BSD-3-Clause]

Math

• XAD (⭐410) - Powerful Automatic Differentiation for C++. [AGPL] website

Serialization

• Protocol Puffers (⭐199) - A little, highly templated, and protobuf-compatible serialization/deserialization header-only library written in C++20. [Apache-2.0]

Miscellaneous

• fast_float (⭐2k) - Fast, Exact C++ from_chars, 4x to 10x faster than strtod, part of GCC 12, Chromium, Redis, Webkit/Safari. [Apache2/BSL-1.0/MIT]

Asynchronous Event Loop

• uv-cpp (⭐834) - a simple interface, high-performance network library based on C++11. [MIT]

JSON

• json.cpp (⭐770) - a baroque JSON parsing / serialization library for C++. [Apache-2.0]

Miscellaneous

• reproc (⭐615) - A cross-platform (C99/C++11) process library. [MIT]

Database

• Kuzu (⭐3.7k) - Embeddable property graph database management system built for query speed and scalability. Implements Cypher. [MIT] website

Networking

• curlpp (⭐1.8k) -C++ wrapper around libcURL. [MIT]

Video

• avcpp (⭐526) - Modern C++ wrapper around FFmpeg. [MIT]

CLI

• barkeep (⭐222) - Small C++ header to display async animations, counters, and progress bars. [Apache-2.0] website

• Ctrl+C (⭐29) - Crossplatform C++11 library to handle Ctrl+C event in custom functions. [MIT]

• tuibox (⭐277) - A single-header terminal UI (TUI) library, capable of creating mouse-driven, interactive applications on the command line. [MIT]

Image Processing

• [Jpegli][https://github.com/google/jpegli (⭐313)] - an improved JPEG encoder and decoder implementation. [BSD-3-Clause]

Miscellaneous

• Pipes (⭐837) - Pipelines for expressive code on collections in C++. [MIT]

Database

• CrossDB (⭐253) - Ultra High-performance Lightweight Embedded and Server OLTP RDBMS. [MPL-2.0] website

• Trilogy (⭐762) - a client library for MySQL-compatible database servers, designed for performance, flexibility, and ease of embedding. [MIT]

GUI

• Saucer (⭐793) - A modern, cross-platform C++ webview library. [MIT]

Concurrency

• BS::thread_pool (⭐2.9k) - A fast, lightweight, and easy-to-use C++17 thread pool library [MIT]

• ThreadPool (⭐8.7k) - A simple C++11 Thread Pool implementation [zlib]

Image Processing

• QOI (⭐7.4k) - The “Quite OK Image Format” for fast, lossless image compression. [MIT]

Miscellaneous

• MPH (⭐254) - C++20 [Minimal] Static Perfect Hash library. [MIT]

Compression

• FastLZ (⭐520) - Small & portable byte-aligned LZ77 compression. [MIT]

Concurrency

• Coros (⭐333) - An easy-to-use and fast library for task-based parallelism, utilizing coroutines. [BSL-1.0]

Logging

• BqLog (⭐506) - A lightweight, high-performance logging system used in projects such as "Honor of Kings". [Apache-2.0]

Reflection

• REFLECT (⭐501) - C++20 Static Reflection library. [MIT]

Serialization

• Wirehair (⭐371) - O(N) Fountain Code for Large Data. [BSD-3-Clause]

Miscellaneous

• HighwayHash (⭐1.6k) - Fast strong hash functions: SipHash/HighwayHash. [Apache-2.0]

GUI

• wxCharts (⭐143) - A library to create charts in wxWidgets applications. [MIT] website

Miscellaneous

• rapidhash (⭐763) - Very fast, high quality, platform-independent hashing algorithm. [BSD-2-Clause]

JSON

• JSON Toolkit (⭐47) - JSON, JSON Pointer, JSON Schema, and JSONL library for C++20. [AGPL/Commercial]

Networking

• FTP client for C++ (⭐233) - C++ client for making FTP requests. [MIT]

Reflection

• simple_enum (⭐41) - An Fast, Intuitive and Type-Safe C++ Enumeration Support Library. [BSL-1.0] website

Videos

• Code for Yourself C++ Playlist - A complete C++ course covering everything from fundamentals to software design.

Websites

• C++ for yourself - A comprehensive tutorial on modern C++ covering everything from fundamentals to software design.

Frameworks

• rpp (⭐211) - Minimal Rust-inspired C++20 STL replacement. [MIT]

Compression

• Kanzi (⭐198) - a modern, modular, portable and efficient lossless data compressor implemented in C++. [Apache-2.0]

Database

• libpg_query (⭐1.4k) - C library for accessing the PostgreSQL parser outside of the server environment. [BSD-3-Clause]

Image Processing

• TinyDNG (⭐178) - Header-only Tiny DNG/TIFF loader and writer in C++. [MIT]

Networking

• TQUIC (⭐1.4k) - A high-performance, lightweight, and cross-platform QUIC library, exposed to C and C++. [Apache2]

Scientific Computing

• Au (⭐412) - A C++14-compatible physical units library with no dependencies and a single-file delivery option. Emphasis on safety, accessibility, performance, and developer experience. [Apache 2.0] website

Scripting

• txiki.js (⭐2.9k) - A tiny JavaScript runtime. [MIT]

Web Application Framework

• Pistache - Pistache is a C++ REST framework written in pure C++11 with no external dependency. [Apache2]

Game Engine

• Axmol Engine (⭐1.3k) - A cross-platform game engine for desktop, mobile, and XBOX (UWP), derived from Cocos2d-x-4.0. [MIT] website

Integrated Development Environment

• C Playground - Online C Programming IDE - An online IDE to practice C Programming where you can write, edit, and run code online.

Miscellaneous

• happly (⭐386) - A C++ header-only parser for the PLY file format. Parse .ply happily! [MIT]

Image Processing

• TinyTIFF (⭐160) - lightweight TIFF reader/writer library. [GPL-3.0]

GUI

• WebUI (⭐4k) - Use any web browser as GUI, with your preferred language in the backend and HTML5 in the frontend. [MIT] website

Miscellaneous

• RapidFuzz (⭐346) - Rapid fuzzy string matching in C++ using the Levenshtein Distance. [MIT] website

Concurrency

• Neco (⭐1.3k) - Concurrency library for C (coroutines). [MIT]

Database

• mgclient (⭐41) - C/C++ Memgraph Client. [Apache2]

Debug

• libassert (⭐700) - The most over-engineered C++ assertion library. [MIT]

Math

• Wagyu (⭐189) - A general library for geometry operations of union, intersections, difference, and xor. [mapbox-wagyu original]

Miscellaneous

• Wildcards (⭐94) - A simple C++ header-only template library implementing matching using wildcards. [BSL-1.0]

Debug

• Bencher - A suite of continuous benchmarking tools designed to catch performance regressions in CI. [MIT]/[Apache2]

• cpp-dump (⭐376) - A C++ library for debugging purposes that can print any variable, even user-defined types. [MIT]

Miscellaneous

• cpp-lazy (⭐364) - a fast and easy lazy evaluation library for C++11/14/17/20. [MIT]

Build Systems

• Sccache (⭐7k) - A fast compiler cache for C/C++, with cross-platform support and cloud backed storage options.

Concurrency

• libfork (⭐830) - A bleeding-edge, lock-free, wait-free, continuation-stealing tasking library built on C++20's coroutines. [MPL-2.0] website

Miscellaneous

• fast_io (⭐835) - Significantly faster input/output for C++20. [MIT]

Build Systems

• Ccache - A fast C/C++ compiler cache. [GPLv3]

Containers

• fixed-containers (⭐436) - Header-only C++20 library that provides fixed capacity constexpr containers. [MIT]

Networking

• mailio (⭐469) - mailio is a cross platform C++ library for MIME format and SMTP, POP3 and IMAP protocols. [BSD]

Frameworks

• SaneCppLibraries (⭐608) - a set of C++ platform abstraction libraries for macOS, Windows and Linux. [MIT] website

Containers

• frozen (⭐1.5k) - a header-only, constexpr alternative to gperf for C++14 users. [Apache-2.0]

Robotics

• SPICE Toolkit (⭐33) - Library and toolkit for computing geometric information used in planning and analyzing science observations obtained from robotic spacecraft. [MIT] website

Image Processing

• OpenJPEG (⭐1.1k) - an open-source JPEG 2000 codec written in C language. [BSD-2-Clause]

XML

• Xalan C (⭐35) - A library and a command line program to transform XML documents using a stylesheet that conforms to XSLT 1.0 standards. [Apache-2.0] website

Miscellaneous

• CRCpp (⭐406) - Easy to use and fast C++ CRC library. [BSD-3-Clause]

CLI

• args (⭐1.6k) - A simple header-only C++ argument parser library. [MIT]

• cxxopts (⭐4.7k) - Lightweight C++ command line option parser. [MIT]

• TermOx (⭐837) - C++17 Terminal User Interface(TUI) Library. [MIT]

Image Processing

• fpng (⭐976) - Super fast C++ .PNG writer/reader. [Unlicense]

• libpng (⭐1.6k) - the reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. [libpng-2.0] website

Scripting

• MiniScript - scripting language modern, elegant, easy to learn, and easy to embed in your own C# or C++ projects. [MIT]

Miscellaneous

• CCTZ (⭐640) - a C++ library for translating between absolute and civil times using the rules of a time zone. [Apache-2.0]

Database

• Reindexer (⭐800) - Embeddable, in-memory, document-oriented database with a high-level Query builder interface. [Apache2] website

Configuration

• mINI (⭐635) - INI file reader and writer. [MIT]

Containers

• hat-trie (⭐859) - C++ implementation of a fast and memory efficient HAT-trie. [MIT]

• st_tree (⭐115) - A fast and flexible c++ template class for tree data structures. [Apache-2.0]

• tree.hh (⭐151) - An STL-like C++ header-only tree library. [GPL2+]

Compression

• Rapidgzip (⭐446) - Gzip Decompression and Random Access for Modern Multi-Core Machines. [Apache-2/MIT]

Inter-process communication

• bRPC (⭐17k) - bRPC is an Industrial-grade RPC framework using C++ Language, which is often used in high performance system such as Search, Storage, Machine learning, Advertisement, Recommendation etc. [Apache2] website

Regular Expression

• SRELL - Unicode-aware regular expression template library for C++. [BSD]

Containers

• flat_hash_map (⭐1.8k) - A very fast flat hashtable with Fibonacci hashing.

Database

• Infinity (⭐4.4k) - The AI-native database built for LLM applications, providing incredibly fast vector and full-text search. [Apache2]

• UStore (⭐623) - Multi-Modal database for BLOBs, JSON, and graphs. [Apache2]

Machine Learning

• catboost (⭐8.8k) - A fast, scalable, high performance Gradient Boosting on Decision Trees library. [Apache2]

• FAISS (⭐39k) - A library for efficient similarity search and clustering of dense vectors. [MIT]

• ggml (⭐14k) - Tensor library for machine learning with 16-bit and 4-bit quantization support. [MIT]

• USearch (⭐3.9k) - Fast search and clustering library for vectors and strings. [Apache2]

Math

• SimSIMD (⭐1.7k) - Vector distance functions for x86 AVX2, AVX-512, Arm NEON, and SVE. [Apache2]

Networking

• RedPanda (⭐12k) - Streaming data platform for developers. Kafka API compatible. 10x faster. [BSL]

• UCall (⭐1.3k) - A high-performance SIMD-accelerated RPC library on io_uring. [Apache2]

Scripting

• LuaBridge3 (⭐331) - A lightweight, dependency-free library for binding Lua, LuaJIT, Luau and Ravi to C++. [MIT]

Physics

• Jolt Physics (⭐9.7k) - A multi core friendly rigid body physics and collision detection library. [MIT]

Videos

• The Cherno's C++ Playlist - Extensive C++ tutorial series by The Cherno.

Weblogs

• C++ Team Blog - Dev blog from the Microsoft Visual C++ team

Frameworks

• itlib (⭐202) - A collection of std-like single-header C++ libraries [MIT]

CLI

• argparse (⭐3.4k) - Argument Parser for Modern C++. [MIT]

Containers

• parallel-hashmap (⭐3.2k) - A family of header-only, very fast and memory-friendly hashmap and btree containers [Apache2] website

• plf::colony (⭐486) - An unordered "bag"-type container which outperforms std containers in high-modification scenarios while maintaining permanent pointers to non-erased elements regardless of insertion/erasure. [zLib] website

Database

• TinyORM (⭐343) - Modern C++ ORM library. [MIT] website

Debug

• Cpptrace (⭐1.4k) - A simple, portable, and self-contained C++ stacktrace library supporting C++11 and greater. [MIT]

GUI

• TGUI (⭐1k) - Cross-platform modern c++ GUI. [Zlib] website

Graphics

• LunaSVG (⭐1.1k) - a standalone SVG rendering library in C++. [MIT]

Image Processing

• libavif (⭐2k) - Library for encoding and decoding .avif files. [BSD-2-Clause]

• libjxl (⭐3.4k) - JPEG XL image format reference implementation. [BSD-3-Clause]

• libspng (⭐823) - Simple, modern libpng alternative. [BSD-2] website

• LodePNG (⭐2.3k) - PNG encoder and decoder in C and C++. [Zlib]

• MozJPEG (⭐5.7k) - Improved JPEG encoder. [BSD/BSD-3-Clause/ZLIB]

Logging

• lwlog (⭐343) - Very fast synchronous and asynchronous C++17 logging library. [MIT]

Memory Allocation

• buddy_alloc (⭐232) - A single header buddy memory allocator for C with bounded allocation costs. [0BSD]

Office Open XML

• DuckX (⭐488) - C++ library for creating and modifying Microsoft Word (.docx) files. [MIT]

• FreeXL - an open source library to extract valid data from within Spreadsheets. [MPL/GPL-2/LGPL-2]

• libxls (⭐518) - Read binary Excel files from C/C++ [BSD-2-Clause]

• libxlsxwriter (⭐1.7k) - A C library for creating Excel XLSX files. [BSD-2-Clause] website

• OpenXLSX (⭐1.7k) - A C++ library for reading, writing, creating and modifying Microsoft Excel® (.xlsx) files. [BSD-3-Clause]

• SimpleXlsxWriter - XLSX files writer for Microsoft Excel 2007 and above. [zlib]

• XLSX I/O (⭐509) - C library for reading and writing .xlsx files. [MIT]

Reflection

• reflect-cpp (⭐1.7k) - Serialization through reflection, including automatic field name retrieval from structs. [MIT]

Scripting

• QuickJS - a small and embeddable JavaScript engine. [MIT]

• v8pp (⭐958) - Header-only library to expose C++ classes and functions into V8 to use them in JavaScript code. [BOOST] website

Serialization

• iguana (⭐1.3k) - a modern, universal and easy-to-use serialization engine developed in C++20 and C++17. [Apache2]

Serial Port

• CSerialPort (⭐874) - lightweight cross-platform serial port library. [LGPL3]

Sorting

• cpp-sort (⭐694) - Sorting algorithms & related tools for C++14. [MIT]

Miscellaneous

• date (⭐3.4k) - A date and time library based on the C++11/14/17 header. [MIT] website

• emio (⭐184) - A safe and fast high-level and low-level character input/output library. [MIT]

• hedley (⭐885) - A C/C++ header file designed to smooth over some platform-specific annoyances. website

• tgbotxx (⭐20) - Telegram Bot C++ Library. [MIT]

Game Engine

• JNGL (⭐315) - 2D library for Linux, Windows, macOS, Android, iOS, Xbox, the Nintendo Switch and the Web. [zlib] website

Internationalization

• simdutf (⭐1.7k) - Unicode routines (UTF8, UTF16, UTF32): billions of characters per second using SSE2, AVX2, NEON, AVX-512. [Apache-2/MIT]

JSON

• Sonic-Cpp (⭐970) - A fast JSON serializing & deserializing library, accelerated by SIMD. [Apache-2.0]

PDF

• pdfio (⭐315) - A simple C library for reading and writing PDF files. [Apache-2] website

• PDFium - PDF generation and rendering library. [BSD-3-Clause]

GUI

• FOX Toolkit - an open-source, cross-platform widget toolkit. [LGPL]

Serial Port

• Libserial (⭐482) - Serial Port Programming in C++. [BSD-3-Clause]

Miscellaneous

• Jinja2С++ (⭐574) - almost full-conformance template engine implementation. website

• scnlib (⭐1.3k) - scanf for modern C++. [Apache-2.0] website

Audio

• Amplitude Audio SDK (⭐70) - A cross-platform audio engine designed with the needs of games in mind. [Apache-2.0] website

Font

• libschrift (⭐555) - A lightweight TrueType font rendering library. [ISC]

Graphics

• ThorVG (⭐1.5k) - a platform-independent portable library that allows for drawing vector-based scenes and animations, including SVG and Lottie. [MIT] website

Networking

• nghttp3 (⭐1.1k) - HTTP/3 library written in C. [MIT] website

Compression

• heatshrink (⭐1.5k) - data compression library for embedded/real-time systems [ISC]

• minizip-ng (⭐1.4k) - Fork of the popular zip manipulation library found in the zlib distribution. [zlib]

• zlib-ng (⭐1.9k) - zlib for the "next generation" systems. Drop-In replacement with some serious optimizations. [zlib]

Database

• Velox (⭐4.1k) - A C++ vectorized database acceleration library aimed to optimizing query engines and data processing systems. [Apache-2.0] website

Articles

• CppCon 2023 Presentation Materials (⭐336) - CppCon 2023 Presentation Materials.

• CppCon 2022 Presentation Materials (⭐559) - CppCon 2022 Presentation Materials.

• CppCon 2021 Presentation Materials (⭐119) - CppCon 2021 Presentation Materials.

• C++Now 2023 Presentations (⭐87) - Presentation materials presented at C++Now 2023.

• C++Now 2022 Presentations (⭐1) - Presentation materials presented at C++Now 2022.

• C++Now 2021 Presentations (⭐4) - Presentation materials presented at C++Now 2021.

Containers

• svector (⭐114) - Compact SVO optimized vector for C++17 or higher. [MIT]

Logging

• haclog (⭐79) - An extremely fast plain C logging library. [MIT]

PDF

• PDF-Writer (⭐1k) - High performance library for creating, modiyfing and parsing PDF files in C++ [Apache-2.0] website

Miscellaneous

• faker-cxx (⭐411) - C++20 Faker library for generating fake (but realistic) data for testing and development. [MIT]

• inja (⭐1.9k) - A Template Engine for Modern C++. [MIT]

Concurrency

• Channel (⭐573) - Thread-safe container for sharing data between threads. [MIT]

• Taskflow (⭐12k) - A General-purpose Parallel and Heterogeneous Task Programming System. (renamed from Cpp-Taskflow) [MIT]

Configuration

• toml11 (⭐1.2k) - a C++11 (or later) header-only toml parser/encoder depending only on C++ standard library. [MIT]

Containers

• unordered_dense (⭐1.3k) - A fast & densely stored hashmap and hashset based on robin-hood backward shift deletion. [MIT]

Database

• DuckDB - in-process SQL OLAP Database Management System. [MIT] website

• TigerBeetleDB C++ client (Community) (⭐11) - TigerBeetle is a financial accounting database designed for mission critical safety and performance to power the future of financial services. [BSL-1.0]

Debug

• CppBenchmark (⭐325) - Performance benchmark framework for C++ with nanoseconds measure precision. [MIT]

JSON

• DAW JSON Link (⭐502) - Fast, convenient JSON serialization and parsing in C++. [BSL-1.0]

• Jsonifier (⭐95) - A few classes for parsing and serializing objects from/into JSON - very rapidly. [MIT]

Networking

• ada (⭐1.7k) - WHATWG-compliant and fast URL parser written in modern C++. [Apache-2.0/MIT]

Physics

• PlayRho (⭐145) - An interactive physics engine & library. [Zlib]

Miscellaneous

• libenvpp (⭐156) - A modern C++ library for type-safe environment variable parsing. [Apache-2.0]

• StringZilla (⭐3.4k) - the Godzilla of string libraries, splitting, sorting, and shuffling large textual datasets faster than you can say "Tokyo Tower". [Apache-2.0]

CSV

• commata (⭐18) - Just another header-only C++17 CSV parser. [Unlicense]

CSV

• ssp (⭐56) - A header only "csv" parser which is fast and versatile with modern C++ api. [MIT]

Integrated Development Environment

• Anjuta DevStudio - The GNOME IDE. [GPL3]

Graphics

• micro-gl (⭐349) - Realtime, Embeddable, Headers Only C++11 CPU vector graphics. no STD lib, no FPU and no GPU required. [CUSTOM] website

Game Engine

• quakeforge (⭐59) - Actively maintained branch of the original Quake engine code with 20+ years of development. [GPL-2.0]

• ezEngine (⭐1.9k) - Is a free, open-source game engine written in C++. Its philosophy is to be modular and flexible, such that it can be adapted to many different use cases. [MIT] website

Graph

• Graaf (⭐377) - A general-purpose lightweight C++20 graph library. [MIT] website

Web Application Framework

• C++ wfrest (⭐996) - C++ Web Framework REST API. [Apache2]

DSP

• DSPFilters (⭐2k) - A collection of useful C++ classes for digital signal processing. [MIT]

• iir1 (⭐747) - IIR Realtime C++ filter library. [MIT]

• kissfft (⭐1.9k) - A Fast Fourier Transform (FFT) library that tries to Keep it Simple, Stupid. [BSD-3-Clause]

• pocketfft (⭐131) - FFT implementation based on FFTPack, but with several improvements. [BSD-3-Clause]

• wavelib (⭐426) - C implementation of 1D and 2D wavelet transforms. [BSD-3-Clause]

Inter-process communication

• SRPC (⭐2.1k) - A lightweight RPC system that supports multiple protocols and OpenTelemetry. [Apache2]

Database

• Speedb (⭐1k) - Community-led project: A RocksDB compliant high performance scalable embedded key-value store. [Apache2]

Talks

• C++ Conferences (⭐12) - Catalog of C++ conferences

Documentation

• Doxide (⭐127) - Modern documentation for modern C++, configure with YAML, output Markdown. [Apache 2.0] website

Scripting

• pocketpy (⭐2k) - C++17 header-only Python interpreter for game scripting. [MIT] website

Frameworks

• Qt ⚡ - A cross-platform application and UI framework. [GPL/LGPL/Proprietary] website

Compression

• LZMA ⚡ - The default and general compression method of 7z format. [PublicDomain] website

Graphics

• GLFWPP (⭐116) - A thin modern C++17 header-only wrapper for GLFW. [MIT]

• Ogre 3D ⚡ - A scene-oriented, real-time, flexible 3D rendering engine (as opposed to a game engine) written in C++. [MIT] website

Image Processing

• OpenCV ⚡ - Open source computer vision. [Apache2] website

JSON

• UltraJSON (⭐4.5k) - Ultra fast JSON decoder and encoder written in C. [BSD-3-Clause]

Multimedia

• SDL (⭐15k) ⚡ - Simple DirectMedia Layer. [zlib] website

Integrated Development Environment

• Microsoft Visual Studio Code (⭐182k) ⚡ - An open-source IDE from Microsoft. [MIT] website

• Qt Creator (⭐3k) ⚡ - A cross-platform C++, JavaScript and QML IDE which is part of the SDK for Qt. [GPL3 with exceptions] website

Configuration

• ini-cpp (⭐48) - Single header only C++ version, with some handy read/write interface, extend from inih (⭐2.9k). [BSD-3-Clause] website

Serialization

• Kaitai Struct - A declarative language to describe various binary data structures and a compiler to generate C++ parser code. [GPLv3+][MIT][Apache2]

Documentation

• doxygen (⭐6.3k) ⚡ - The de facto standard tool for generating documentation from annotated C++ sources. [GPL2] website

• doxyrest (⭐308) - A compiler from Doxygen XML to reStructuredText for Sphinx. [MIT]

• hdoc (⭐335) - The modern documentation tool for C++. [AGPL/Proprietary] website

• Natural Docs (⭐224) - Natural Docs is an open source documentation generator for multiple programming languages. [AGPL/Proprietary] website

• Sphinx (⭐7.7k) - Sphinx makes it easy to create intelligent and beautiful documentation. [BSD-2-Clause] website

Websites

• C++ reference - A complete online reference for the C and C++ languages and standard libraries.

• C++ Quiz - A simple online quiz that you can use to test your knowledge of the C++ programming language.

• PVS-Studio’s challenge - PVS-Studio’s C++ quiz in which you're asked to find errors in code fragments of open source projects.

Serial Port

• Boost.Asio (⭐1.5k) - Boost.Asio includes classes for creating and manipulating serial ports in a portable manner. [Boost] website

Audio

• Aubio (⭐3.6k) - A library for audio and music analysis.[GPL-3.0] website

CLI

• Boost.Program_options (⭐126) - A library to obtain program options via conventional methods such as command line and config file. [Boost] website

Debug

• Boost.Test (⭐210) - Boost Test Library. [Boost] website

Image Processing

• Boost.GIL (⭐196) - Generic Image Library. [Boost] website

Inter-process communication

• Boost.Interprocess (⭐171) - Header-only Boost library that supports kernel-level shared memory and memory-mapped files, with in-built synchronization mechanisms (semaphores, mutexes, and more). [Boost] website

XML

• Boost.PropertyTree (⭐61) - A property tree parser/generator that can be used to parse XML/JSON/INI/Info files. [Boost] website

Logging

• Boost.Log (⭐207) - Designed to be very modular and extensible. [Boost] website

Math

• Boost.Multiprecision (⭐246) - provides higher-range/precision integer, rational and floating-point types in C++, header-only or with GMP/MPFR/LibTomMath backends. [Boost] website

• DirectXMath (⭐1.8k) - An all inline SIMD C++ linear algebra library for use in games and graphics apps.

Reflection

• TSMP (⭐103) - An intrusion and macro-free C++20 library for static reflection. It uses libclang to extract reflection data from your source code and makes it usable via template specialization. [MIT]

Scripting

• Boost.Python (⭐521) - A C++ library which enables seamless interoperability between C++ and the Python programming language. [Boost] website

Serialization

• Boost.Serialization (⭐132) - Boost Serialization Library. [Boost] website

Miscellaneous

• Boost.Signals2 (⭐87) - An implementation of a managed signals and slots system. [Boost] website

Websites

• Build Bench - Compare C++ Builds.

• Quick Bench - Quick C++ Benchmarks.

Other Awesome Projects

• awesome-hpp (⭐4.1k) - A curated list of awesome header-only C++ libraries.

Robotics

• Ruckig (⭐1.1k) - Real-time motion generation for robots and machines. [MIT] website

Internationalization

• uni-algo (⭐314) - Unicode Algorithms Implementation for C/C++. [Unlicense or MIT]

Miscellaneous

• Cheat Sheets of HackingCPP - Cool cheat sheets and infographics for algorithms, views, containers, randomness, etc.

Configuration

• inipp (⭐306) - Simple header-only C++ ini parser and generator. [MIT]

Math

• ExprTk - The C++ Mathematical Expression Toolkit Library (ExprTk) is a simple to use, easy to integrate and extremely efficient run-time mathematical expression parser and evaluation engine. [MIT]

• Wykobi - A C++ library of efficient, robust and simple to use C++ 2D/3D oriented computational geometry routines. [MIT]

Miscellaneous

• StrTk - A C++ library consisting of high performance string processing routines. [MIT]

Websites

• cppexpert.online - Learn the best C++ practices by improving code snippets with some problems or with bad practices.

Audio

• audioFlux (⭐3.3k) - A C library for audio and music analysis, feature extraction. [MIT]

JSON

• jsonParse (⭐11) - A simple JSON parser in ANSI C. [MIT]

Online Compiler

• Programiz - An online compiler for learners and developers.

Image Processing

• BitmapPlusPLus (⭐49) - Simple and Fast header only Bitmap C++ library. [MIT]

Frameworks

• libxutils (⭐74) - Simple and yet powerful cross-platform C library providing data structures, algorithms and much more. [MIT]

Database

• Kvrocks (⭐4.2k) - A distributed key value NoSQL database that uses RocksDB as storage engine and is compatible with Redis protocol. [Apache2]

• LMDB - Very fast embedded key/value store with full ACID semantics. [OpenLDAP]

Debug

• snitch (⭐303) - Lightweight C++20 testing framework. [Boost]

Font

• harfbuzz (⭐5.4k) - A text shaping engine. [Old MIT]

Game Engine

• Torque2D (⭐1.5k) - An open-source and cross-platform C++ engine built for 2D game development. [MIT] website

• Torque3D (⭐1.9k) - An open-source C++ engine built for 3D game development. [MIT] website

Math

• MatX (⭐1.4k) - A GPU-accelerated C++17 numerical computing library with a MATLAB/Python-like syntax. [BSD 3-clause]

• muparser - muParser is an extensible high performance math expression parser library written in C++. [MIT]

Online Compiler

• Wandbox - An online Clang/GCC compiler with Boost available.

Build Systems

• waf - Python-based framework for configuring, compiling and installing applications. [BSD] website

GUI

• MyGUI (⭐804) - Fast, flexible and simple GUI. [MIT]

Serialization

• zpp_bits (⭐925) - Actually, the fastest modern Serialization library. Just check this video.

Other Awesome Projects

• This list is currently empty, but you can add to it by opening a merge request.

• Please reach out if you are interested in sponsoring this repo. Your company's name and logo will be prominently displayed here.

Videos

• Caleb Curry's C Programming Tutorials - An all-in-one playlist of tutorials for C programming.

Miscellaneous

• pspsdk (⭐1.1k) - An open-source SDK for PSP homebrew development. [BSD/GNU GPL3]

Yaml

• rapidyaml (⭐704) - Rapid YAML is a C++ library to parse and emit YAML. [MIT]

CLI

• clipp (⭐1.3k) - Easy to use, powerful and expressive command line argument handling for C++11/14/17 contained in a single header file. [MIT]

Miscellaneous

• Argon2 (⭐5.2k) - The password hash Argon2, winner of PHC. [CC0/Apache2]

Database

• libpqxx (⭐1.3k) - The official C++ client API for PostgreSQL. [BSD-3-Clause]

Miscellaneous

• jwt-cpp (⭐1.1k) - A header only library for creating and validating JSON web tokens in C++. [MIT]

Cryptography

• HEhub (⭐96) - A library for homomorphic encryption and its applications. [Apache2]

Networking

• Lithium - Build high performance C++ HTTP servers without being a C++ expert. [MIT]

Integrated Development Environment

• Embarcadero Dev-CPP (⭐2.9k) - A fork of Dev-C++ that comes preinstalled with new themes and modern compilers. [GPLv2] website

Frameworks

• CGraph (⭐2.3k) - A cross-platform DAG framework based on C++ without any 3rd-party. [MIT]

Reflection

• Easy Reflection (⭐104) - Easy and fast reflection + serialization solution like in Rust, Java or Go. [Apache]

JSON

• Glaze (⭐2.4k) - Extremely fast, in memory, JSON and interface library for modern C++. [MIT]

Web Application Framework

• userver (⭐2.8k) - Asynchronous C++17 framework with a rich set of abstractions and database drivers for fast and comfortable creation of efficient microservices, services and utilities. [Apache-2.0] website

Coding Standards

• Cert C++

• Misra C++ 2008

Debug

• nanobench (⭐1.7k) - Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20. [MIT] website

Compression

• bzip3 (⭐1.1k) - A better and stronger spiritual successor to BZip2. [LGPL]

Frameworks

• Coost (⭐4.2k) - A tiny boost library in C++11. [MIT]

Static Code Analysis

• Trunk - Toolkit to check, test, merge, and monitor code.

Miscellaneous

• D++ (DPP) (⭐1.3k) - A lightweight, high performance and scalable C++ library for creating Discord Bots. [Apache2] website

Websites

• C++ Tutorial for Beginners - A comprenhensive tutorial on C++ curated by trained experts.

Debug

• Touca (⭐509) - Open-source regression testing system that you can self-host. [Apache2] website

Graphics

• Harfang 3D (⭐639) 3D visualization library usable in C++, Python, Lua and Go. Based on BGFX. [GPLv3/LGPLv3/Proprietary] website

Machine Learning

• ONNX runtime (⭐19k) - C and C++ library for training and inference ONNX models. ONNX is a standard that AI models can be converted into, regardless of the library they are trained with. [MIT] website

Audio

• rnnoise (⭐5.4k) - Recurrent neural network for audio noise reduction. [BSD-3-Clause]

Debug

• FakeIt (⭐1.4k) - Simple mocking framework for C++. [MIT]

Static Code Analysis

• OptView2 (⭐147) - Inspect missed Clang optimizations.

Inter-process communication

• iceoryx (⭐2k) - True zero-copy inter-process communication framework for safety critical systems with bindings for C, Rust. Runs on Linux, QNX, Windows, Mac OS, FreeBSD. [Apache2] website

Miscellaneous

• fccf (⭐383) - A command-line tool that recursively searches a directory to find C/C++ source code matching a search string. [MIT]

CSV

• lazycsv (⭐92) - A fast, lightweight and single-header csv parser for modern C++. [MIT]

JSON

• json-build (⭐48) - C89 tiny zero-allocation JSON serializer. [MIT]

Miscellaneous

• Concord (⭐611) - A Discord API wrapper library written in C. [MIT] website

GUI

• Slint (⭐22k) - Lightweight GUI toolkit for desktop and embedded. [GPL/Free/Proprietary] website

Graphics

• Skia (⭐11k) - A complete 2D graphic library for drawing Text, Geometries, and Images. [BSD] website

Chemistry

• MADNESS (⭐214) - Multiresolution Adaptive Numerical Environment for Scientific Simulation. [GPL] website (⭐214)

• MPQC (⭐80) - The Massively Parallel Quantum Chemistry program, MPQC, computes properties of atoms and molecules from first principles using the time independent Schrödinger equation. [GPL] website

• Psi (⭐1.1k) - An ab initio computational chemistry package. [GPL] website

Debug

• VLD - Visual Leak Detector. A free, robust, open-source memory leak detection system for Visual C++.

Concurrency

• rotor (⭐379) - Event loop friendly C++ actor micro framework. [MIT]

CLI

• oof (⭐860) - Convenient, high-performance RGB color and position control for console output. [MIT]

Memory Allocation

• rpmalloc (⭐2.4k) - Cross platform lock free thread caching 16-byte aligned memory allocator implemented in C. [PublicDomain]

• snmalloc (⭐1.8k) - Message passing based high-performance allocator. [MIT]

• TCMalloc (⭐5.1k) - Google's fast, multi-threaded malloc implementation. [Apache-2.0] website

Books

• Free C Books (⭐383k) - vhf/free-programming-books/C.

• Free C++ Books (⭐383k) - vhf/free-programming-books/C++.

Database

• ClickHouse (⭐358) - C++ client for ClickHouse DBMS. [Apache2]

Database

• sqlite_orm (⭐2.6k) - SQLite ORM light header only library for modern C++. [AGPL + paid MIT]

CLI

• FINAL CUT (⭐1.1k) - Library for creating terminal applications with text-based widgets. [LGPL]

Scientific Computing

• preCICE (⭐890) - Coupling library for partitioned multi-physics simulations (FSI, CHT, and more). [LGPL] website

Serialization

• cista (⭐2.2k) - A C++17 library for zero-copy high-performance (de-)serialization. [MIT]

Configuration

• inifile-cpp (⭐412) - A header-only and easy to use Ini file parser for C++. [MIT]

Online Compiler

• InterviewBit - A simple and easy to use online C++ compiler.

Frameworks

• xtd (⭐1.1k) - Modern C++20 framework to create console (CLI), forms (GUI) and unit tests (xUnit) applications on Windows, macOS, Linux, iOS, Android, FreeBSD and Haiku. [MIT]

Scripting

• djinni - A tool for generating cross-language type declarations and interface bindings. [Apache2]

Web Application Framework

• Crow (⭐4.7k) - Crow is a C++ microframework for running web services. It uses routing similar to Python's Flask. [BSD] website

Audio

• dr_libs (⭐1.7k) - Single file audio decoding libraries for C and C++. [Unlicense]

• miniaudio (⭐6.4k) - Single file audio playback and capture library. [Unlicense] website

Frameworks

• Seastar (⭐9.1k) - An advanced, open-source C++ framework for high-performance server applications on modern hardware. [Apache-2.0 License] seastar.io

CLI

• popl (⭐177) - A single-header templated command line arguments and ini file parser for C++ 11 and beyond. [MIT]

Data visualization

• matplotplusplus (⭐4.8k) - C++ Graphics Library for Data Visualization. [MIT] website

Machine Learning

• m2cgen (⭐3k) - A CLI tool to transpile trained classic ML models into a native C code with zero dependencies. [MIT]

Physics

• Kratos (⭐1.2k) - framework for building parallel, multi-disciplinary simulation software, aiming at modularity, extensibility, and high performance. [BSD] website

Debug

• DebugViewPP (⭐1.2k) - Debug logging viewer. [Boost]

Online Compiler

• codechef - A simple online compiler CodeChef.

Build Systems

• build2 - cross-platform build, packaging and dependency management toolchain for developing and packaging C/C++ projects. [MIT]

Game Engine

• o3de (⭐9k) - An open-source, real-time, multi-platform 3D engine based on Amazon Lumberyard. [Apache2] website

Reflection

• config-loader (⭐246) - A C++17 static reflection framework, from parse configuration file to native data structure. [MIT]

Frameworks

• MiLi (⭐40) - Minimal headers-only C++ Library. [Boost]

Chemistry

• gromacs (⭐870) - A message-passing parallel molecular dynamics implementation. [GPL] website

Image Processing

• Magick++ - ImageMagick program interfaces for C++. [Apache2]

• MagickWnd - ImageMagick program interfaces for C. [Apache2]

Logging

• Easylogging++ (⭐3.9k) - Extremely light-weight high performance logging library for C++11 (or higher) applications. [MIT]

Math

• xtensor (⭐3.7k) - A C++14 library for numerical analysis with multi-dimensional array expressions, inspired by NumPy syntax. [BSD 3-clause] website

Reflection

• clReflect (⭐283) - C++ Reflection using clang. [MIT]

Miscellaneous

• libsigc++ (⭐439) - A typesafe callback system for standard C++. [LGPL] website

Compiler

• Microsoft Visual C++ - MSVC, developed by Microsoft.

Graph

• CXXGraph (⭐678) - free C++(17) graph header-only library for representation and algorithms execution. [AGPL-3.0]

Math

• NumCpp (⭐3.9k) - A templatized header only C++ implementation of the Python Numpy library. [MIT]

Video

• x265 - Open h.265 video codec implementation. [GPL2] website

Logging

• fmtlog (⭐990) - A performant fmtlib-style logging library with latency in nanoseconds. [MIT]

Artificial Intelligence

• flashlight (⭐5.4k) - Flashlight is a fast, flexible machine learning library written entirely in C++. [BSD]

Containers

• C++ B-tree (⭐80) - A template library that implements ordered in-memory containers based on a B-tree data structure. [Apache2]

Machine Learning

• ncnn (⭐23k) - A high-performance neural network inference computing framework optimized for mobile platforms. [BSD]

Asynchronous Event Loop

• Ichor (⭐231) - An event queue which focuses on thread safety and provides dependency injection. [MIT]

Image Processing

• SAIL (⭐346) - Easy-to-use cross-platform image decoding library with pluggable image codecs. [MIT]

Audio

• ni-media (⭐253) - C++ library for reading and writing audio files. [MIT]

JSON

• yyjson (⭐3.6k) - A high performance JSON library written in ANSI C. [MIT]

Networking

• cpp-httplib (⭐16k) - A single file C++11 header-only HTTP/HTTPS server library. [MIT]

JSON

• json-struct (⭐466) - High performance, single header JSON parser parsing to and from C++ structs. [MIT]

Yaml

• mini-yaml (⭐239) - Single header YAML 1.0 C++11 serializer/deserializer. [MIT]

• yaml-cpp (⭐5.8k) - A YAML parser and emitter in C++. [MIT]

CSV

• Csv::Parser (⭐33) - Compile-time and runtime CSV parser written in C++17. [Zlib]

Reflection

• Refureku (⭐248) - A C++17 runtime reflection and code generation library. [MIT]

Frameworks

• C++ Workflow (⭐14k) ⚡ - C++ Parallel Computing and Asynchronous Networking Engine. [Apache2]

Websites

• C++ by Example - Learn C++ by Example.

Artificial Intelligence

• oneDNN (⭐4k) - An open-source cross-platform performance library for deep learning applications. [Apache] website

Machine Learning

• oneDAL (⭐647) - A powerful machine learning library that helps speed up big data analysis. [Apache]

Math

• PCG-rand - PCG is a family of simple fast space-efficient statistically good algorithms for random number generation. Unlike many general-purpose RNGs, they are also hard to predict. [Apache]

Sorting

• Indiesort (⭐21) - A sort wrapper which enables the use of std::sort (& other random-access sort functions) with non-random-access containers, and also improves sort performance for large/non-trivially-copyable types in random-access containers and arrays. [zLib] website

Concurrency

• concurrencpp (⭐2.7k) - A general concurrency library containing tasks, executors, timers and C++20 coroutines to rule them all.

CLI

• cpp-terminal (⭐639) - Small header only C++ library for writing multiplatform terminal applications. [MIT]

• FTXUI (⭐9.7k) - C++ Functional Terminal User Interface. [MIT]

• imtui (⭐3.5k) - Immediate Mode Text-based User Interface. [MIT]

Graphics

• C-Turtle (⭐82) - A C++11 header-only turtle graphics library acting as a CImg wrapper. [MIT]

Multimedia

• libass (⭐1.1k) - Portable subtitle renderer for the ASS/SSA subtitle format. [ISC]

Networking

• CppServer (⭐1.6k) - Ultra fast and low latency asynchronous socket server & client C++ library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution. [MIT]

Physics

• PhysX (⭐2.4k) - An open-source realtime physics engine middleware SDK developed by Nvidia as a part of Nvidia GameWorks software suite. [BSD-3-Clause]

Serialization

• Bitsery (⭐1.2k) - Header only C++ binary serialization library. [MIT]

• FastBinaryEncoding (⭐946) - Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, Swift. [MIT]

Web Application Framework

• oat++ (⭐8.6k) - Light, zero-dependency framework to create high-performance web-services. [Apache-2.0] website

Online Compiler

• paiza.io - An online C/C++ compiler with multiple files supporting feature, GitHub(gist) integration and collaborative editing.

Weblogs

• Fluent C++

Concurrency

• cuda-api-wrappers (⭐873) - Lightweight, Modern-C++ wrappers for the CUDA GPU programming runtime API. [BSD]

• STAPL - A C++ parallel programming framework designed to work on both shared and distributed memory parallel computers. [BSD]

Articles

• CppCon 2020 Presentation Materials (⭐1.6k) - CppCon 2020 Presentation Materials.

Compression

• KArchive - A library for creating, reading, writing and manipulating file archives like zip and tar. It also provides transparent compression and decompression of data, using formats like gzip, via a subclass of QIODevice. [LGPL]

Serialization

• mrpt-serialization (⭐2.1k) - Versioned serialization to binary or text formats. [BSD] website

GUI

• NanoGui (⭐1.8k) - A minimalistic cross-platform widget library for OpenGL 3.x or higher. [BSD]

Game Engine

• nCine (⭐1.3k) - A cross-platform 2D game engine with an emphasis on performance, written in C++11 and optionally scriptable in Lua. [MIT] website

Robotics

• YARP (Yet Another Robot Platform) (⭐586) - Library and toolkit for communication and device interfaces. [BSD-3-Clause] website

Networking

• Boost.Beast (⭐4.8k) ⚡ - HTTP and WebSocket built on Boost.Asio in C++11. [Boost] website

Database

• UnQLite (⭐2.3k) - A self-contained, serverless, zero-configuration, transactional NoSQL engine. [BSD-2-Clause] website

JSON

• jsoncons (⭐820) - A C++ header-only library for JSON and JSON-like binary formats with JSONPointer, JSONPatch, JSONPath and JMESPath. [Boost]

Containers

• PGM-index (⭐864) - A data structure that enables fast lookup, predecessor, range searches and updates in arrays of billions of items using orders of magnitude less space than traditional indexes. [Apache2] website

Audio

• AudioFile (⭐1.1k) - A simple C++ library for reading and writing audio files. [MIT]

CSV

• csv2 (⭐617) - Fast CSV parser for modern C++. [MIT]

GUI

• Elements (⭐3.7k) - Lightweight, fine-grained, resolution independent, modular GUI library. [MIT]

Frameworks

• Kigs framework (⭐88) - A free and open source C++ modular multi-purpose cross platform RAD framework. [MIT] website

Debug

• microprofile (⭐1.6k) - Profiler with web-view for multiple platforms. [Unlicense]

Concurrency

• stdgpu (⭐1.3k) - Efficient STL-like Data Structures on the GPU. [Apache2]

GUI

• implot (⭐5.9k) - Immediate Mode Plotting widgets for imgui. [MIT]

GUI

• nuklear (⭐11k) - A single-header ANSI C gui library. [PublicDomain]

Build Systems

• SW - Cross-platform C++ (and other langs) Build System and Package Manager with a lot of packages available. [GPLv3]

Inter-process communication

• eCAL (⭐11) - Pub/sub, client/server, C++/Python/C#, various message protocols (protobuf, capnproto ..). [Apache2] website

Concurrency

• SObjectizer (⭐587) - An implementation of Actor, Publish-Subscribe, and CSP models in one rather small C++ framework. [BSD-3-Clause]

Miscellaneous

• VarTypes (⭐16) - A feature-rich, object-oriented framework for managing variables in C++ / Qt4. [LGPL]

Asynchronous Event Loop

• libhv (⭐7.5k) - Cross-platform event loop library. [BSD]

Concurrency

• HPX (⭐2.8k) - A general purpose C++ runtime system for parallel and distributed applications of any scale. [Boost]

• Kokkos (⭐2.5k) - A performance portable programming model for parallel execution and memory abstraction. [BSD]

• marl (⭐2k) - Marl is a hybrid thread / fiber task scheduler written in C++ 11. [Apache-2.0]

• Quantum (⭐626) - A powerful C++ coroutine dispatcher framework built on top of Boost.Coroutine2.

Game Engine

• crown (⭐27) - Crown is a general purpose data-driven game engine, written from scratch in orthodox C++ with a minimalistic and data-oriented design philosophy in mind. [MIT]

Logging

• Quill (⭐2.8k) - Asynchronous cross platform low latency logging library. [MIT]

Math

• Klein (⭐791) - A fast, SIMD-optimized C++17 Geometric Algebra library for point, line, and plane projections, intersections, joins, rigid-body motion, and more. [MIT] website

Networking

• tlse (⭐657) - Single C file TLS 1.2/1.3 implementation, using tomcrypt as crypto library [BSD-2-Clause]

Configuration

• toml++ (⭐2k) - Header-only TOML parser and serializer for C++17 and later. [MIT] website

Chemistry

• d-SEAMS (⭐38) - A molecular dynamics trajectory analysis engine in C++ and Lua with Nix. It is an acronym for Deferred Structural Elucidation Analysis for Molecular Simulations. [GPL] website

• LAMMPS (⭐2.8k) - A classical molecular dynamics code with a focus on materials modeling. It's an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator. [GPL] website

Game Engine

• Grit (⭐124) - Community project to build a free game engine for implementing open world 3D games. [MIT]

Miscellaneous

• pprint (⭐927) - Pretty Printer for Modern C++. [MIT]

GUI

• RmlUi (⭐3.8k) - The HTML/CSS User Interface library evolved. Fork of libRocket. [MIT]

Physics

• Simbody (⭐2.5k) - High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton. [Apache2]

• SOFA (⭐1.2k) - SOFA is an open-source framework targeting at real-time simulation, with an emphasis on medical simulation. [LGPL] website

Audio

• LAME - LAME is a high quality MPEG Audio Layer III (MP3) encoder. [LGPL]

CLI

• tabulate (⭐2.1k) - Table Maker for Modern C++. [MIT]

Talks

• Meeting Cpp - Meeting C++ YouTube Channel

Chemistry

• Reaktoro (⭐205) - A computational framework in C++ and Python for modeling chemically reactive systems. [LGPL] website

CLI

• indicators (⭐3.4k) - Activity indicators for Modern C++. [MIT]

Math

• autodiff (⭐1.9k) - A modern, fast and expressive C++ library for automatic differentiation. [MIT] website

CLI

• Ncurses - A terminal user interface. [MIT]

Debug

• μt (⭐1.4k) - C++20 single header/single module, macro-free μ(micro)/Unit Testing Framework. [Boost]

Math

• CNL (⭐683) - A Compositional Numeric Library for C++. [Boost]

CLI

• Lyra (⭐571) - A simple to use, composable, command line parser for C++ 11 and beyond. [Boost]

Web Application Framework

• C++ REST SDK (⭐8.3k) - Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. [MIT]

Static Code Analysis

• IKOS (⭐3.1k) - Static analyzer for C/C++ based on the theory of Abstract Interpretation. [NOSA 1.3]

PDF

• litePDF - Library to create and edit PDF documents that uses GDI functions through a device context to draw the page content. [LGPL v3 and zlib]

Articles

• CppCon 2019 Presentation Materials (⭐1.3k) - CppCon 2019 Presentation Materials.

Audio

• libsoundio (⭐2.1k) - C library for cross-platform real-time audio input and output. [MIT] website

Networking

• KCP (⭐17k) - A fast and reliable ARQ protocol that helps applications to reduce network latency. [MIT]

Coding Style Tools

• EditorConfig - EditorConfig helps maintain consistent coding styles across different editors and IDEs.

Reflection

• magic_get (⭐222) - std::tuple like methods for user defined types without any macro or boilerplate code. [Boost]

Audio

• Verovio (⭐820) - Verovio is a fast and lightweight music notation engraving library. [LGPL] website

Compression

• bit7z (⭐811) - A C++ static library offering a clean and simple interface to the 7-zip shared libraries. [MPL2]

Integrated Development Environment

• juCi++ - Cross-platform, lightweight C++ IDE with libclang integration. [MIT]

Configuration

• libconfig (⭐1.2k) - C, C++ library for processing structured configuration files. [LGPL-2.1] website

Machine Learning

• libsvm (⭐4.7k) - A simple, easy-to-use, efficient library for Support Vector Machines. [BSD-3-Clause] website

Asynchronous Event Loop

• promise-cpp (⭐694) - Header only library that implements Promise/A+ standard. [Anti-996]

Configuration

• inih (⭐2.9k) - Simple .INI file parser in C, good for embedded systems. [BSD-3-Clause]

• inih (⭐449) - Single header only C++ version of inih (⭐2.9k). [BSD-3-Clause]

• iniparser (⭐1.1k) - INI file parser. [MIT]

• libconfuse (⭐503) - Small configuration file parser library for C. [ISC]

• simpleini (⭐1.3k) - Cross-platform C++ library providing a simple API to read and write INI-style configuration files. [MIT]

Font

• Fontconfig - Font configuration and customization library. [MIT] website

• FreeType - FreeType is a freely available software library to render fonts. [FTL & GPLv2]

• otfcc (⭐436) - A C library and utility used for parsing and writing OpenType font files. [Apache-2.0]

Game Engine

• Corange (⭐1.9k) - A game engine written in pure C, SDL and OpenGL. [BSD]

• toy engine (⭐1.6k) - toy is a thin and modular c++ game engine and offers simple expressive c++ idioms to design full featured 2D or 3D games in fast iterations.

Graphics

• LLGL (⭐2.5k) - Low Level Graphics Library (LLGL) is a thin abstraction layer for the modern graphics APIs. [BSD-3-Clause]

Image Processing

• Leptonica (⭐2k) - Leptonica is an open source library containing software that is broadly useful for image processing and image analysis applications. [BSD-2-Clause] website

Serialization

• Cap'n Proto (⭐13k) - Fast data interchange format and capability-based RPC system. [MIT] website

Machine Learning

• darknet (⭐26k) - Open source neural network framework written in C and CUDA. [PublicDomain] website

Memory Allocation

• tgc (⭐1.1k) - A tiny garbage collector for C written in ~500 LOC. [BSD]

Networking

• DPDK (⭐4.1k) - Data Plane Development Kit, libraries and drivers for fast packet processing. [BSD-3-Clause & GPL-2.0] website

• PF_RING™ (⭐2.9k) - High-speed packet processing framework. [LGPL-2.1] website

Robotics

• RobWork - A collection of C++ libraries for simulation and control of robot systems. [Apache2] website

Compiler

• Open WatCom - Watcom C, C++, and Fortran cross compilers and tools. [Sybase Open Watcom Public License]

Integrated Development Environment

• YouCompleteMe (⭐26k) - YouCompleteMe is a fast, as-you-type, fuzzy-search code completion engine for Vim.

Debug

• dbg-macro (⭐3.2k) - A dbg(…) macro for C++. [MIT]

GUI

• Boden (⭐1.7k) - Native, mobile, cross-platform GUI Framework. [GPL/LGPL/Proprietary] website

JSON

• parson (⭐1.4k) - Parson is a lighweight json library written in C. [MIT]

Coding Style Tools

• Uncrustify (⭐3k) - Code beautifier.

Articles

• C++Now 2019 Presentations (⭐92) - Presentation materials presented at C++Now 2019.

JSON

• cJSON (⭐12k) - Ultralightweight JSON parser in ANSI C. [MIT]

• simdjson (⭐23k) - Extremely fast JSON library that can parse gigabytes of JSON per second. [Apache-2.0]

Memory Allocation

• mimalloc (⭐13k) - A compact general purpose allocator with excellent performance. [MIT]

Networking

• lwIP - A lightweight TCP/IP stack. [Modified BSD]

• mTCP (⭐2.1k) - Highly scalable user-level TCP stack for multicore systems. [Modified BSD]

Serialization

• protobuf (⭐71k) - Protocol Buffers - Google's data interchange format. [BSD]

• upb (⭐1.5k) - A small protobuf implementation in C. [BSD]

CLI

• cli (⭐1.3k) - A cross-platform header only C++14 library for interactive command line interfaces (Cisco style). [Boost]

Containers

• robin-hood-hashing (⭐1.6k) - Fast & memory efficient hashtable based on robin hood hashing for C++14. [MIT]

• robin-map (⭐1.4k) - Fast hash map and hash set using robin hood hashing. [MIT]

CSV

• Fast C++ CSV Parser (⭐2.3k) - Small, easy-to-use and fast header-only library for reading CSV files. [BSD-3-Clause]

JSON

• taoJSON (⭐665) - Zero-dependency C++ header-only JSON library. [MIT]

Math

• GLM (⭐11k) - Header-only C++ math library that matches and inter-operates with OpenGL's GLSL math. [MIT] website

• linalg.h (⭐938) - Single header, public domain, short vector math library for C++. [Unlicense]

Memory Allocation

• C Smart Pointers (⭐1.7k) - Smart pointers for the (GNU) C programming language. [MIT]

Networking

• libhttpserver (⭐943) - C++ library for creating an embedded Rest HTTP server (and more). [LGPL2.1]

Asynchronous Event Loop

• libuv (⭐27k) - Cross-platform asynchronous I/O. [BSD]

Containers

• dynamic_bitset (⭐175) - Simple Useful Libraries: C++17/20 header-only dynamic bitset. [MIT] website

CSV

• Vince's CSV Parser (⭐1.1k) - A fast, self-contained, streaming C++17 CSV parser with optional type-casting and statistics. [MIT]

Internationalization

• utf8proc (⭐1.2k) - A clean C library for processing UTF-8 Unicode data. [MIT]

Web Application Framework

• Drogon (⭐14k) - A C++17/20 based, high-performance HTTP application framework. [MIT]

Reflection

• visit_struct (⭐637) - A miniature library for struct-field reflection in C++. [Boost]

Miscellaneous

• PEGTL (⭐2.1k) - The Parsing Expression Grammar Template Library. [MIT]

Build Systems

• Buck (⭐8.6k) - A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages including C++ developed and used at Facebook. Written in Java. [Apache]

Other Awesome Projects

• Awesome Modern C++ (⭐13k) - A collection of resources on modern C++.

Physics

• Quantum++ (⭐640) - A modern C++11 quantum computing library. [MIT]

Concurrency

• FiberTaskingLib (⭐981) - Task-based multi-threading library that supports task graphs with arbitrary dependencies. [Apache]

• Intel Games Task Scheduler (⭐457) - A task scheduling framework designed for the needs of game developers. [MIT]

Debug

• Nonius (⭐367) - A C++ micro-benchmarking framework. [CC]

Regular Expression

• Hyperscan (⭐5.3k) - Hyperscan is a high-performance multiple regex matching library by Intel. Provides simultaneous matching of large numbers of regexps (up to tens of thousands). Typically used in a DPI library stack. [BSD]

• PIRE (⭐337) - Perl Incompatible Regular Expressions library by Yandex. Can be really fast (more than 400 MB/s). [LPGL v3.0]

Networking

• librdkafka (⭐916) - Apache Kafka client library for C and C++. [BSD-2-Clause]

• ZeroMQ (⭐11k) - High-speed, modular asynchronous communication library. [LGPL3/MPL2] website

Reflection

• meta (⭐649) - Header-only, non-intrusive and macro-free runtime reflection system in C++. [MIT]

Scripting

• PHP-CPP (⭐1.4k) - A library to build PHP extensions with C++. [Apache2] website

Miscellaneous

• CPPItertools (⭐1.4k) - Range-based for loop add-ons inspired by the Python builtins and itertools library. [BSD-2-Clause]

• mio (⭐1.9k) - Cross-platform C++11 header-only library for memory mapped file IO. [MIT]

Debug

• Unity (⭐5.1k) - Simple Unit Testing for C. [MIT]

Game Engine

• Spring (⭐3.9k) - A powerful free cross-platform RTS game engine. [GPLv2/GPLv3] website

Graphics

• Blend2D (⭐1.9k) - 2D vector graphics engine powered by a JIT compiler. [Zlib] website

Math

• universal (⭐486) - A C++14 header-only library implementing arbitrary posit arithmetic. The posit number system is a tapered floating point that is more efficient than IEEE floating point. Posits enable reproducible computational science. [MIT license]

Reflection

• Magic Enum (⭐6k) - Header-only C++17 library provides static reflection for enums (to string, from string, iteration), work with any enum type without any macro or boilerplate code. [MIT]

Compression

• LZ4 (⭐12k) - Extremely Fast Compression algorithm. [BSD] website

Game Engine

• raylib (⭐31k) - A simple and easy-to-use library to enjoy videogames programming. [zlib/libpng] website

Audio

• PortAudio - PortAudio is a free, cross-platform, open-source, audio I/O library. [MIT]

Memory Allocation

• memory-allocators (⭐1.9k) - Custom memory allocators to improve the performance of dynamic memory allocation. [MIT]

Networking

• MQTT-C (⭐876) - A portable MQTT C client for embedded systems and PCs alike. [MIT] website

• WAFer (⭐693) - A C language-based ultra-light software platform for scalable server-side and networking applications. Think node.js for C programmers. [GPL2]

Reflection

• Better Enums (⭐1.8k) - Reflective enums (to string, iteration). Single header. [BSD] website

• CPFG (⭐219) - A C++03 library for reflection, callback and script binding. [Apache2]

• CPP-Reflection (⭐701) - C++ Reflection using clang. [MIT]

• Nameof (⭐2.3k) - Header-only C++17 library provides nameof macros and functions to obtain the simple name of variable, type, function, macro, and enum. [MIT]

• Ponder (⭐662) - A C++11 library for reflection. [MIT]

• RTTR (⭐3.4k) - A C++11 library for reflection. [MIT] website

Static Code Analysis

• List of tools for static code analysis - A list of tools for static code analysis from Wikipedia.

Audio

• libsndfile (⭐1.7k) - C library with C++ wrapper for reading and writing files containing sampled sound through one standard library interface. [LGPL-2.1] website

GUI

• iup - Multi-platform toolkit for building graphical user interfaces. [MIT]

Image Processing

• libfacedetection (⭐13k) - Open source library for face detection in images. The face detection speed can reach 1500FPS. [BSD]

Math

• SymEngine (⭐1.3k) - Fast symbolic manipulation library, a rewriting of SymPy's core in C++. [MIT]

Networking

• Restinio (⭐1.3k) - A header-only C++14 library that gives you an embedded HTTP/Websocket server. [BSD]

• cpp-netlib/uri (⭐142) - URI parser/builder library for C++, compatible with RFC 3986 and RFC 3987. [Boost]

• restclient-cpp (⭐1.6k) - Simple REST client for C++. It wraps libcurl for HTTP requests. [MIT]

• uriparser (⭐401) - Strictly RFC 3986 compliant URI parsing and handling library. [BSD-3-Clause]

Build Systems

• Vcpkg (⭐27k) - C++ library manager for Windows, Linux, and MacOS. [MIT]

Podcasts

• CppChat - A (sometimes) weekly look at what's going on in the world of C++ chatting with a guest from the community.

Other Awesome Projects

• 30 Seconds of C++ (⭐1.5k)

Compression

• miniz (⭐2.7k) - Single C source file Deflate/Inflate compression library with zlib-compatible API, ZIP archive reading/writing, PNG writing. [MIT]

Machine Learning

• flashlight (⭐5.4k) - A fast, flexible machine learning library from Facebook AI Research written entirely in C++ and based on the ArrayFire tensor library. [BSD-3-Clause] website

Weblogs

• Simplify C++

• Bartek's Coding Blog

• Kenny Kerr

• Sutter’s Mill

• Vorbrodt's C++ Blog

• foonathan::blog()

Game Engine

• Halley (⭐3.8k) - A lightweight game engine written in C++14 with a "true" entity-component system. [Apache 2.0]

Regular Expression

• Oniguruma (⭐2.5k) - A modern and flexible regular expressions library that supports a variety of character encodings. [BSD]

Memory Allocation

• memory (⭐1.6k) - STL compatible C++ memory allocator library. [ZLib]

Networking

• PcapPlusPlus (⭐3.1k) - a multiplatform C++ network sniffing and packet parsing and crafting framework. [Unlicense]

Frameworks

• Cxxomfort - A small, header-only library that backports various facilities from more recent C++ Standards to C++03 and later. [MIT]

Debug

• check (⭐1.2k) - Check is a unit testing framework for C. [LGPL-2.1] website

Math

• Armadillo - Fast C++ library for linear algebra & scientific computing. [Apache2] website

Miscellaneous

• libusb - A universal USB library which allows for portable access to USB devices. [LGPL2]

Image Processing

• libjpeg-turbo (⭐4.2k) - A JPEG image codec that uses SIMD instructions to accelerate baseline JPEG encoding and decoding. [IJG & BSD-3-Clause & zlib] website

Math

• lp_solve - A library used to formulate and solve linear programming problems. [LGPL] website

Memory Allocation

• Boehm GC (⭐3.4k) - Conservative garbage collector for C and C++. [similar to X11] website

Math

• Dlib (⭐14k) ⚡ - A modern C++11 machine learning, computer vision, numerical optimization, and deep learning toolkit. [Boost] website

Scripting

• AngelScript - AngelScript is a game-oriented interpreted/compiled scripting language. [zlib]

• V8 - A fast JavaScript engine by Google that can be embedded into any C++ application. [BSD]

Database

• SOCI (⭐1.6k) - A database abstraction layer for C++. [Boost]

Serialization

• nanopb (⭐5.2k) - Small code-size Protocol Buffers implementation in ANSI C. [Zlib]

Artificial Intelligence

• MXNet (⭐21k) - Lightweight, Portable, Flexible Distributed/Mobile Deep Learning with Dynamic, Mutation-aware Dataflow Dep Scheduler; for Python, R, Julia, Scala, Go, JavaScript and more. website

• PyTorch (⭐98k) - Tensors and Dynamic neural networks in Python with strong GPU acceleration. website

Audio

• Wav2Letter++ (⭐6.4k) - Public domain, a fast open source speech processing toolkit written entirely in C++ and uses the ArrayFire tensor library and the flashlight machine learning library for maximum efficiency. [BSD]

Image Processing

• CxImage - An image processing and conversion library to load, save, display, transform BMP, JPEG, GIF, PNG, TIFF, MNG, ICO, PCX, TGA, WMF, WBMP, JBG, J2K images. [zlib]

• Simd (⭐2.2k) - C++ image processing library with using of SIMD: SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, VMX(Altivec) and VSX(Power7), NEON for ARM. [MIT]

JSON

• Jsmn (⭐4.1k) - A minimalistic JSON parser in C. [MIT]

Networking

• c-ares (⭐2.1k) - A C library for asynchronous DNS requests. [MIT]

• PicoHTTPParser (⭐2k) - A tiny, primitive, fast HTTP request/response parser. [MIT]

Regular Expression

• sregex (⭐625) - A non-backtracking NFA/DFA-based Perl-compatible regex engine library for matching on large data streams. [BSD]

Graphics

• Yocto/GL (⭐2.9k) - Tiny C++ Libraries for Data-Driven Physically-based Graphics. [MIT]

Logging

• plog (⭐2.5k) - Portable and simple log for C++ in less than 1000 lines of code. [MPL2]

Physics

• Project Chrono (⭐2.7k) - An open source multi-physics simulation engine. [BSD-3-Clause] website

Sorting

• pdqsort (⭐2.5k) - Pattern-defeating quicksort. [zlib]

Miscellaneous

• DynaMix (⭐691) - A library which allows you to compose and modify objects at run time. [MIT]

Build Systems

• Cget (⭐462) - Cmake package retrieval. [Boost] website

Image Processing

• stb-image (⭐33k) - STB single-header image loading library. [Public Domain]

Internationalization

• gettext - GNU 'gettext'. [GPL2]

Coding Style Tools

• Artistic Style - A tool to format C/C++/C#/Obj-C/Java code. Also known as astyle.

Database

• sqlpp11 (⭐2.6k) - A type safe embedded domain specific language for SQL queries and results in C++. [BSD-2-Clause]

Graphics

• assimp (⭐13k) - Open Asset Import Library (assimp) is a cross-platform 3D model import library which aims to provide a common API for different 3D asset file formats. [BSD-3-Clause] website

Inter-process communication

• rpclib (⭐1.8k) - A modern C++ msgpack-RPC server and client library. [MIT]

JSON

• sajson (⭐571) - Lightweight, extremely high-performance JSON parser for C++11. [MIT]

Serialization

• Bond (⭐2.6k) - An open source, cross-platform framework for working with schematized data. [MIT]

Concurrency

• libdispatch (⭐2.6k) - Grand Central Dispatch (GCD), developed by Apple Inc., is a task parallelism technology based on the thread pool pattern. libdispatch is a library that provides the implementation of GCD's services. [Apache-2.0] website

Inter-process communication

• Ice (⭐2.2k) - Comprehensive RPC framework with support for C++, C#, Java, JavaScript, Python and more. [GPLv2]

Networking

• libpcap (⭐3.1k) - A portable C/C++ library for network traffic capture. [BSD] website

PDF

• DynaPDF - An easy-to-use PDF generation library. [Commercial]

Scientific Computing

• AMGCL (⭐837) - a header-only C++ library for solving large sparse linear systems with algebraic multigrid. [MIT]

Web Application Framework

• facil.io (⭐2.4k) - Evented, high performance C web framework supporting HTTP, WebSockets, SSE and more. [MIT] website

CLI

• linenoise (⭐4.2k) - A small self-contained alternative to readline and libedit. [BSD-2-Clause]

• linenoise-ng (⭐370) - A small, portable GNU readline replacement for Linux, Windows and MacOS which is capable of handling UTF-8 characters. [BSD]

Networking

• Libmicrohttpd - GNU libmicrohttpd is a small C library that is supposed to make it easy to run an HTTP server as part of another application. [LGPL v2.1+]

Game Engine

• OpenXRay (⭐3.4k) - a community-modified X-Ray engine used in S.T.A.L.K.E.R. game series. [Modified BSD/non-commercial only]

Graphics

• TinySpline (⭐1.3k) - A small, yet powerful ANSI C library for interpolating, transforming, and querying arbitrary NURBS, B-Splines, and Bézier curves. [MIT]

Inter-process communication

• nng (⭐4.5k) - nanomsg-next-generation, a light-weight brokerless messaging library. [MIT] website

JSON

• LIBUCL (⭐1.7k) ⚡ - Universal configuration library parser. [BSD-2-Clause]

Multimedia

• libav (⭐1.1k) - A collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata. [LGPL v2.1+ and others] website

• TagLib (⭐1.4k) - A library for reading and editing the metadata of several popular audio formats. [LGPL/MPL] website

Networking

• Wangle (⭐3.1k) - A client/server application framework to build asynchronous, event-driven modern C++ services. [Apache-2.0]

Scripting

• sol2 (⭐4.9k) - A C++ <-> Lua API wrapper with advanced features and top notch performance. [MIT]

Build Systems

• Spack - A flexible package manager that supports multiple versions, configurations, platforms, and compilers. [Apache-2.0/MIT]

• XMake - A C/C++ cross-platform build utility based on Lua that comes with an integrated package manager, xrepo. [Apache]

Regular Expression

• CTRE (⭐3.8k) - A Compile time PCRE (almost) compatible regular expression matcher. [MIT]

Cryptography

• libhydrogen (⭐748) - A lightweight, secure, easy-to-use crypto library suitable for constrained environments. [ISC]

Game Engine

• PixelGameEngine (⭐4.1k) - The official distribution of olcPixelGameEngine, a tool used in javidx9's YouTube videos and projects. [OLC3]

Serialization

• YAS (⭐772) - Very fast Yet Another Serialization library supports the binary/text/json formats. [Boost]

Compression

• libarchive (⭐3.4k) - Multi-format archive and compression library. [New BSD] website

Scripting

• LuaBridge (⭐1.8k) - A lightweight, dependency-free library for binding Lua to C++. [MIT]

XML

• Mini-XML (⭐505) - A small XML parsing library written in ANSI C. [LGPL2 with exceptions]

Static Code Analysis

• cpplint (⭐1.8k) - A C++ style checker following Google's C++ style guide.

Articles

• CppCon 2018 Presentation Materials (⭐1.4k) - CppCon 2018 Presentation Materials.

• C++Now 2018 Presentations (⭐125) - Presentation materials presented at C++Now 2018.

Biology

• BioC++ - C++ Computational Libraries for Bioinformatics. [BSD]

• Chaste - An open source C++ library for the computational simulation of mathematical models developed for physiology and biology. [BSD]

Memory Allocation

• Hoard (⭐1.2k) - Fast, Scalable, and Memory-efficient Malloc for Linux, Windows, and Mac. [Apache-2.0] website

• jemalloc (⭐11k) - General purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support. [BSD] website

PDF

• PoDoFo - A library to work with the PDF file format. [LGPL]

• Xpdf - Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. [GPL v2/GPL v3]

Online Compiler

• Try It Online - TIO is a family of online interpreters for an evergrowing list of practical and recreational programming languages.

CLI

• termbox (⭐2k) - A C library for writing text-based user interfaces. [MIT]

Networking

• ACE - An OO Network Programming Toolkit in C++. [?MIT?]

Concurrency

• Async++ (⭐1.4k) - A lightweight concurrency framework for C++11, inspired by the Microsoft PPL library and the N3428 C++ standard proposal. [MIT]

Miscellaneous

• SimpleSignal (⭐178) - High performance C++11 signals. [PublicDomain]

Frameworks

• ETL (⭐2.9k) - Embedded Template Library. [MIT]

Podcasts

• CppCast - The first podcast by C++ developers for C++ developers.

Cryptography

• sha1collisiondetection (⭐1.4k) - Library and command line tool to detect SHA-1 collision in a file. [MIT]

• Tink (⭐14k) - A multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse. [Apache-2.0]

Artificial Intelligence

• Genann (⭐2.2k) - Simple neural network library in C. [zlib]

Database

• nanodbc (⭐378) - A small C++ wrapper for the native C ODBC API. [MIT]

• ODB - An open-source, cross-platform, and cross-database object-relational mapping (ORM) system for C++. [GPLv2]

Game Engine

• Acid (⭐1.9k) - A high speed C++17 Vulkan game engine. [MIT]

Logging

• P7Baical - An open source and cross-platform library for high-speed sending telemetry & trace data with minimal usage of CPU and memory. [LGPL]

Math

• TinyExpr (⭐1.9k) - A C library for parsing and evaluating math expressions from strings. [zlib]

Networking

• H2O (⭐11k) - An optimized HTTP server with support for HTTP/1.x and HTTP/2. It can also be used as a library. [MIT]

Miscellaneous

• Tulip Indicators - A C library of over 100 financial technical analysis indicators. [LGPL]

Concurrency

• transwarp (⭐632) - A header-only C++ library for task concurrency. [MIT]

Math

• Geometric Tools - C++ library for computing in the fields of mathematics, graphics, image analysis and physics. [Boost] website

Math

• StatsLib (⭐560) - A C++ header-only library of statistical distribution functions. [Apache2] website

Image Processing

• TinyEXIF (⭐131) - Tiny ISO-compliant C++ EXIF and XMP parsing library for JPEG. [MIT]

Build Systems

• Bazel - A multi-language, fast and scalable build system from Google. [Apache]

Graphics

• libigl (⭐5k) - Simple C++ geometry processing library. [MPL2]

• NanoVG (⭐5.6k) - Antialiased 2D vector drawing library on top of OpenGL for UI and visualizations. [Zlib]

Build Systems

• clib (⭐5.1k) - Package manager for the C programming language. [MIT]

Game Engine

• EnTT (⭐12k) - Gaming meets modern C++. [MIT]

Machine Learning

• VLFeat (⭐1.6k) - The VLFeat open source library implements popular computer vision algorithms specialising in image understanding and local featurexs extraction and matching. [BSD-2-Clause] website

Networking

• ENet (⭐3.1k) - Reliable UDP networking library. [MIT] website

Concurrency

• Intel Parallel STL (⭐762) - Intel® implementation of C++17 STL for C++11 and above. [Apache2]

Containers

• ring_span lite (⭐166) - A simplified implementation of Arthur O'Dwyer's ring_span implementation ie. a circular buffer view. [MIT]

Containers

• plf::list (⭐167) - A std::list implementation which removes range splicing in order to enable cache-friendlier structure, yielding significant performance gains. [zLib] website

• plf::stack (⭐71) - A replacement container for the std::stack container adaptor, with better performance than any std container in a stack context. [zLib] website

Debug

• Nanotimer (⭐149) - A simple low-overhead cross-platform timer class for benchmarking. [zLib] website

Sorting

• Timsort (⭐314) - A templated stable sorting function which outperforms quicksort-based algorithms including std::sort, for reversed or semi-sorted data. [MIT]

Audio

• SoLoud (⭐2.1k) - Easy, portable audio engine for games. [zlib]

Graphics

• Diligent Engine (⭐4.2k) - A modern cross-platform low-level 3D graphics library. [Apache2]

Online Compiler

• repl.it - A powerful yet simple tools and platforms for educators, learners, and developers.

CLI

• CLI11 (⭐4.1k) - Header only single or multi-file C++11 library for simple and advanced CLI parsing. [BSD]

Integrated Development Environment

• cquery (⭐2.4k) - A C++ code completion engine for vscode, emacs, vim, etc.

Debug

• Deleaker - A tool for resource leak detection, including memory, GDI and handle leaks.

CLI

• replxx (⭐739) - A readline and libedit replacement that supports UTF-8, syntax highlighting, hints, works on Unix and Windows. [BSD]

Static Code Analysis

• CppDepend - Simplifies managing a complex C/C++ code base by analyzing and visualizing code dependencies, by defining design rules, by doing impact analysis, and comparing different versions of the code.

Database

• SQLiteC++ (⭐2.6k) - SQLiteC++ (SQLiteCpp) is a smart and easy to use C++ SQLite3 wrapper. [MIT]

• sqlite_modern_cpp (⭐945) - Header only C++14 wrapper around sqlite library. [MIT]

Audio

• minimp3 (⭐1.8k) - Public domain, header-only MP3 decoder with clean-room implementation. [CC0]

Cryptography

• digestpp (⭐204) - C++11 header-only message digest (hash) library. [PublicDomain]

Scientific Computing

• TileDB (⭐2k) - Fast Dense and Sparse Multidimensional Array DBMS. [MIT] website

Debug

• MinUnit (⭐629) - A minimal unit testing framework for C self-contained in a single header file. [MIT]

Math

• GMP - A C library for arbitrary precision arithmetic, operating on signed integers, rational numbers, and floating-point numbers. [LGPL3 & GPL2]

Scripting

• SIP - C or C++ Bindings Generator for Python v2 and v3. [GPL]

Serialization

• MessagePack (⭐3.3k) - Efficient binary serialization format "like JSON" for C and C++. [Apache2] website

Integrated Development Environment

• Cevelop - Cross-platform C and C++ IDE based on Eclipse CDT with additional plug-ins.

• CLion - Cross-platform C and C++ IDE from JetBrains.

• CodeLite - Another cross-platform, free C and C++ IDE. [GPL2 with an exception for plugins]

Books

• List of Free C or C++ Books (⭐70k)

Videos

• List of C or C++ YouTube Videos (⭐70k)

Websites

• C++ Hints - Every business day hints about most often C++ mistakes and ways to solve them from PVS-Studio Team.

Other Awesome Projects

• Awesome C++ - LibHunt's mirror.

• Awesome interview questions (⭐81k) - A list of lists of interview questions for the most popular technologies, including C and C++.

Build Systems

• Hunter - CMake driven cross-platform package manager for C++. [BSD-2]

Frameworks

• Yomm2 (⭐381) - Fast, Orthogonal, Open multi-methods. Supersedes Yomm11 (⭐119) [Boost]

Graphics

• magnum (⭐5.1k) - Lightweight and modular C++11/C++14 graphics middleware for games and data visualization. [MIT] website

Frameworks

• FunctionalPlus (⭐2.3k) - Functional Programming Library for C++. Write concise and readable C++ code. [MIT]

Artificial Intelligence

• frugally-deep (⭐1.1k) - Header-only library for using Keras models in C++. [MIT]

Containers

• sparsepp (⭐1.3k) - A fast, memory efficient hash map for C++. [BSD 3-clause]

Cryptography

• Tiny AES in C (⭐4.9k) - Small portable AES128/192/256 in C. [PublicDomain]

Logging

• loguru (⭐1.9k) - A lightweight C++ logging library. [PublicDomain]

Machine Learning

• xgboost (⭐28k) - Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Flink and DataFlow. [Apache2]

Other Awesome Projects

• AwesomePerfCpp (⭐2.5k) - A curated list of awesome C/C++ performance optimization resources.

Web Application Framework

• Cutelyst (⭐965) - A C++ Web Framework built on top of Qt, using the simple approach of Catalyst (Perl) framework. [BSD-3-Clause] website

Networking

• evpp (⭐3.8k) - C++ high performance networking with TCP/UDP/HTTP protocols. [BSD]

Websites

• C++ tutorial - A user ranked online tutorial bank site displaying multiple courses to learn C++ from.

Video

• Vireo (⭐950) - A lightweight and versatile video processing library by Twitter. [MIT]

Articles

• C++Now 2017 Presentations (⭐496) - Presentation materials presented at C++Now 2017.

• C++Now 2016 Presentations (⭐82) - Presentation materials presented at C++Now 2016.

Frameworks

• GLib - GLib provides the core application building blocks for libraries and applications written in C. [LGPL]

• tbox (⭐5.1k) - A glib-like multi-platform c library. [Apache2] website

Concurrency

• alpaka (⭐4) - Abstraction library for parallel kernel acceleration. [LGPLv3+]

• concurrentqueue (⭐12k) - A fast multi-producer, multi-consumer lock-free concurrent queue for C++11. [BSD,Boost]

• cupla (⭐4) - C++ API to run CUDA/C++ on OpenMP, Threads, TBB, ... through Alpaka. [LGPLv3+]

• readerwriterqueue (⭐4.5k) - A fast single-producer, single-consumer lock-free queue for C++. [BSD]

GUI

• Yue (⭐3.6k) - A library for creating native cross-platform GUI apps. [LGPLv2]

Graphics

• herebedragons (⭐1.9k) - A basic 3D scene implemented with various engines, frameworks or APIs. [MIT] website

• Ion (⭐1.4k) - A small and efficient set of libraries for building cross-platform client or server applications that use 3D graphics. [Apache2] website

Scientific Computing

• Torch (⭐9.1k) - A scientific computing framework with wide support for machine learning algorithms that puts GPUs first. [BSD-3-Clause] website

Scripting

• ctypes.sh (⭐2.2k) - A foreign function interface for bash. [MIT]

Static Code Analysis

• cpp-dependencies (⭐768) - Tool to check C++ #include dependencies (dependency graphs created in .dot format). [Apache]

Serial Port

• Asio (⭐5.8k) - Asio includes classes for creating and manipulating serial ports in a portable manner. [Boost] website

Asynchronous Event Loop

• C++ Actor Framework (⭐3.4k) - An Open Source Implementation of the Actor Model in C++. [BSD-3-Clause] website

Debug

• Catch2 (⭐20k) - A modern, C++-native, test framework for unit-tests, TDD and BDD. [Boost]

• CppUTest (⭐1.5k) - Unit testing and mocking framework for C/C++. [BSD-3-clause]

Graphics

• DirectXTK (⭐2.8k) - A collection of helper classes for writing DirectX 11.x code in C++. [MIT]

Networking

• nghttp2 (⭐5k) - HTTP/2 C Library. [MIT] website

• uWebSockets (⭐19k) - µWS is one of the most lightweight, efficient & scalable WebSocket & HTTP server implementations available. [Zlib]

Scripting

• cppimport (⭐1.2k) - Import C++ files directly from Python! [MIT]

• CppSharp (⭐3.4k) - Tools and libraries to glue C/C++ APIs to high-level languages. [MIT]

• Cython (⭐11k) - Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself. [Apache] website

• JavaCpp (⭐4.7k) - The missing bridge between Java and native C++. [Apache2]

• libffi (⭐4.2k) - A portable foreign-function interface library. [MIT] website

• nbind (⭐2k) - Magical headers that make your C++ library accessible from JavaScript. [MIT]

• pybind11 (⭐18k) - Seamless operability between C++11 and Python. [BSD]

• SWIG (⭐6.2k) - A wrapper/interface Generator that let you link your c++ code to JavaScript, Perl, PHP, Python, Tcl and Ruby. [GPL/Output not licensed] website

Build Systems

• Bear (⭐6.2k) - A tool to generate compilation database for clang tooling. [GPLv3]

Static Code Analysis

• include-what-you-use (⭐4.6k) - A tool for use with clang to analyze includes in C and C++ source files. website

Math

• OpenBLAS (⭐7.3k) - An optimized BLAS library based on GotoBLAS2 1.13 BSD version. [BSD 3-clause] website

Multimedia

• MediaInfoLib (⭐743) - Convenient unified display of the most relevant technical and tag data for video and audio files. [BSD]

CLI

• TCLAP - A mature, stable and feature-rich library for defining and accessing command line arguments in ANSI C++. [MIT]

Cryptography

• BeeCrypt - A portable and fast cryptography library. [LGPLv2.1+]

Game Engine

• KlayGE (⭐2.2k) - a cross-platform open source game engine with plugin-based architecture. [GPLv2] website

Networking

• HTTP Parser (⭐6.4k) ⚡ - A http request/response parser for C. [MIT]

• libquic (⭐1.8k) - A QUIC protocol library extracted from Chromium's QUIC Implementation. [BSD]

• libwebsockets (⭐5.2k) - A lightweight pure C WebSocket implementation that provides both client and server libraries. [LGPL2.1 + static link exception] website

Regular Expression

• CppVerbalExpressions (⭐392) - C++ regular expressions made easy. [MIT]

• PCRE - A regular expression C library inspired by the regular expression capabilities in Perl. [BSD]

• RE2 (⭐9.6k) - A software library for regular expressions via a finite-state machine using automata theory. [BSD-3-Clause]

• SLRE (⭐550) - Super Light Regexp engine for C/C++. [GPLv2/Proprietary]

Cryptography

• Bcrypt - A cross platform file encryption utility. Encrypted files are portable across all supported operating systems and processors. [BSD]

• Crypto++ (⭐5.4k) - A free C++ class library of cryptographic schemes. [Boost] website

• Libgcrypt - A general purpose cryptographic library originally based on code from GnuPG. [LGPLv2.1+]

Machine Learning

• RNNLIB (⭐904) - RNNLIB is a recurrent neural network library for sequence learning problems. [GPLv3]

Math

• CGAL (⭐5.8k) - Collection of efficient and reliable geometric algorithms. [LGPL&GPL] website

• linmath.h (⭐1k) - A lean linear math library, aimed at graphics programming. [WTFPL]

PDF

• Poppler - Open-source multi-backend PDF rendering library based on the xpdf-3.0 code base. [GPLv2/GPLv3]

Frameworks

• abseil-cpp (⭐17k) - Abseil C++ Common Libraries. [Apache2]

JSON

• json-c (⭐3.2k) - A JSON implementation in C. [MIT]

Logging

• glog (⭐7.4k) - C++ implementation of the Google logging module.

PDF

• libharu (⭐2k) - A free, cross platform, open-sourced software library for generating PDF. [zlib]

• MuPDF - A lightweight PDF, XPS, and E-book viewer. [AGPL/Proprietary]

Networking

• Seasocks (⭐776) - Simple, small, C++ embeddable webserver with WebSockets support. [BSD]

Standard Libraries

• The GNU C Library - The purpose of this manual is to tell you how to use the facilities of the GNU C Library.

Artificial Intelligence

• Kaldi (⭐15k) - Toolkit for speech recognition. [Apache]

Debug

• fff (⭐904) - A micro-framework for creating fake C functions. [MIT]

Articles

• CppCon 2017 Presentation Materials (⭐1.8k) - CppCon 2017 Presentation Materials.

CLI

• PDCurses (⭐1.2k) - Public domain curses library with both source code and pre-compiled library available. [PublicDomain]

Debug

• utest.h (⭐952) - Single header unit testing framework for C and C++. [Unlicense]

Internationalization

• utf8.h (⭐1.9k) - Single header utf8 string functions for C and C++. [Unlicense]

JSON

• json.h (⭐797) - A simple one header/one source solution to parsing JSON in C and C++. [Unlicense]

Networking

• curlcpp (⭐675) - An object oriented C++ wrapper for CURL(libcurl). [MIT]

• wdt (⭐3k) - An embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths. [BSD-3-Clause]

CLI

• Argh! (⭐1.4k) - A minimalist, frustration-free, header-only argument handler. [BSD]

GUI

• libui (⭐11k) - Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports. [MIT]

Miscellaneous

• stdman (⭐987) - A tool that parses archived HTML files from cppreference and generates groff-formatted manual pages for Unix-based systems. [MIT]

• value-category-cheatsheet (⭐406) A PDF cheatsheet for lvalues, rvalues, and the like. [Jank copyleft]

Concurrency

• libdill (⭐1.9k) - Introduces structured concurrency in C. [MIT]

• libmill (⭐3.1k) - Introduces Go-style concurrency in C. [MIT]

Miscellaneous

• stb (⭐33k) ⚡ - A range of single-file libraries for C/C++. [PublicDomain]

Other Awesome Projects

• awesome (⭐442k) ⚡ - A curated list of awesome lists.

• nothings/single_file_libs (⭐9.8k) ⚡ - List of single-file C/C++ libraries.

Debugger

• x64dbg - An open-source x64/x32 debugger for windows.

Artificial Intelligence

• CNTK (⭐18k) - Microsoft Cognitive Toolkit (CNTK), an open source deep-learning toolkit. [Boost]

Networking

• Breep (⭐146) - Event based, high-level C++14 peer-to-peer library. [EUPL-1.1 (OSI approved)]

Miscellaneous

• Kangaru (⭐543) - A dependency injection container for C++11 and C++14. [MIT]

Database

• SimDB (⭐556) - High performance, shared memory, lock free, cross platform, single file, minimal dependencies, C++11 key-value store. [Apache2]

Asynchronous Event Loop

• uvw (⭐2k) - C++ wrapper for libuv. [MIT]

Web Application Framework

• lwan (⭐6k) - Experimental, scalable, high performance HTTP server. [GPL2]

Game Engine

• Urho3D - A free lightweight, cross-platform 2D and 3D game engine implemented in C++. Greatly inspired by OGRE and Horde3D. [MIT]

Cryptography

• OpenSSL (⭐30k) - A robust, commercial-grade, full-featured, and Open Source cryptography library. [Apache] website

Miscellaneous

• {fmt} (⭐23k) ⚡ - Small, safe and fast formatting library for C++. [Simplified BSD] website

Artificial Intelligence

• tiny-dnn (⭐6k) - A header only, dependency-free deep learning framework in C++11. [BSD]

Concurrency

• Intel TBB - Intel® Threading Building Blocks. [Apache2]

Coding Style

• Linux kernel coding style

Machine Learning

• mlpack (⭐5.6k) - A scalable c++ machine learning library. [LGPLv3] website

Containers

• Hopscotch map (⭐765) - A fast header-only hash map which uses hopscotch hashing for collisions resolution. [MIT]

Static Code Analysis

• PVS-Studio - A tool for bug detection in the source code of programs, written in C, C++ and C#.

Other Awesome Projects

• C++ links (⭐5.2k) - A categorized list of C++ resources.

Image Processing

• DCMTK - DICOM Toolkit.

• tesseract-ocr - An OCR engine. [Apache2]

Static Code Analysis

• Infer (⭐16k) - A static analyzer for Java, C and Objective-C. [BSD]

Cryptography

• Themis (⭐2k) - crypto library for painless data security, providing symmetric and asymmetric encryption, secure sockets with forward secrecy, for mobile and server platforms. [Apache2]

Debug

• backward-cpp (⭐4.3k) - A beautiful stack trace pretty printer for C++. [MIT]

Logging

• Blackhole (⭐203) - Attribute-based logging framework, which is designed to be fast, modular and highly customizable. [MIT]

Build Systems

• Conan - C/C++ Package Manager, open sourced. [MIT]

Cryptography

• mbedTLS (⭐6.5k) - An open source, portable, easy to use, readable and flexible SSL library, previously known as PolarSSL. [Apache2] website

Database

• LevelDB (⭐39k) - A fast key-value storage library written at Google that provides an ordered mapping from string keys to string values. [BSD]

Math

• Vc (⭐1.5k) - SIMD Vector Classes for C++. [BSD]

Articles

• CppCon 2016 Presentation Materials (⭐1.8k) - CppCon 2016 Presentation Materials.

• CppCon 2015 Presentation Materials (⭐1.8k) - CppCon 2015 Presentation Materials.

• CppCon 2014 Presentation Materials (⭐2.3k) - CppCon 2014 Presentation Materials.

Compression

• Snappy - A fast compressor/decompressor. [BSD]

Image Processing

• CImg - A small, open source, C++ toolkit for image processing. [Own LGPL or GPL]

Compression

• Brotli (⭐15k) - Brotli compression format. Developed by Google. [MIT]

• FiniteStateEntropy (⭐1.5k) - New generation entropy codecs : Finite State Entropy and Huff0.

• LZFSE (⭐1.8k) - LZFSE compression library and command line tool. Developed by Apple.

• zstd (⭐27k) - Zstandard - Fast real-time compression algorithm. Developed by Facebook. [BSD]

Build Systems

• Ninja - A small build system with a focus on speed.

Audio

• KFR - Fast, modern C++ DSP framework, FFT, FIR/IIR filters, Sample Rate Conversion. [GPL/Proprietary]

Build Systems

• Scons - A software construction tool configured with a Python script.

• Premake - A tool configured with a Lua script to generate project files for Visual Studio, GNU Make, Xcode, Code::Blocks, and more across Windows, Mac OS X, and Linux.

Concurrency

• CUB (⭐87) - CUB provides state-of-the-art, reusable software components for every layer of the CUDA programming mode. [New BSD]

• moderngpu (⭐1.8k) - moderngpu is a productivity library for general-purpose computing on GPUs. It is a header-only C++ library written for CUDA. The unique value of the library is in its accelerated primitives for solving irregularly parallel problems. [FreeBSD & Copyright, Sean Baxter]

• NCCL (⭐4.5k) - Optimized primitives for collective multi-GPU communication. [BSD]

Scientific Computing

• Trilinos (⭐1.4k) - High performance PDE solvers. [BSD]

Concurrency

• RaftLib - The RaftLib C++ library, streaming/dataflow concurrency via C++ iostream-like operators. [Apache2]

Artificial Intelligence

• ANNetGPGPU (⭐111) - A GPU (CUDA) based Artificial Neural Network library. [LGPL]

• Recast/Detour (⭐7.6k) - (3D) Navigation mesh generator and pathfinder, mostly for games. [zlib]

• Veles (⭐916) - Distributed platform for rapid Deep learning application development. [Apache]

Multimedia

• SFML (⭐12k) ⚡ - Simple and Fast Multimedia Library. [zlib] website

Scripting

• Duktape (⭐6.2k) - An embeddable JavaScript engine with compact footprint. [MIT] website

Web Application Framework

• TreeFrog Framework (⭐1.4k) - High-speed and full-stack web application framework based on C++ and Qt, which supports HTTP and WebSocket protocol (with O/R mapping). [BSD] website

Other Awesome Projects

• Awesome C 1

• Awesome C (⭐3.8k) 2

Game Engine

• Cocos2d-x - A multi-platform framework for building 2d games, interactive books, demos and other graphical applications. [MIT]

Coding Style

• Google C++ Style Guide

Debug

• doctest (⭐6.6k) - The lightest feature rich C++ single header testing framework. [MIT]

API Design

• Designing Qt-Style C++ APIs

Frameworks

• EASTL (⭐9.2k) - Electronic Arts Standard Template Library. [BSD]

Machine Learning

• Fido (⭐461) - A highly-modular C++ machine learning library for embedded electronics and robotics. [MIT] website

Networking

• Restbed (⭐2k) - C++11 Asynchronous RESTful framework. [AGPL]

Database

• upscaledb - An embedded "typed" key/value store with a built-in query interface. [GPLv3]

Graphics

• Irrlicht - A high performance realtime 3D engine written in C++. [zlib]

Scripting

• ChakraCore (⭐9.2k) -A JavaScript engine by Microsoft that can be embedded into nodejs. [MIT]

Compiler

• Clang - A C compiler for LLVM. Supports C++11/14/1z C11. Developed by LLVM Team. [NCSA]

• GCC - GNU Compiler Collection. Supports C++11/14/1z C11 and OpenMP. [GNU GPL3]

Math

• blaze - high-performance C++ math library for dense and sparse arithmetic. [BSD]

Artificial Intelligence

• TensorFlow (⭐194k) - An open source software library for numerical computation using data flow graphs. [Apache]

Concurrency

• ck (⭐2.6k) - Concurrency primitives, safe memory reclamation mechanisms and non-blocking data structures. [BSD]

• junction (⭐1.4k) - A library of concurrent data structures in C++. [BSD]

• libcds (⭐2.7k) - A C++ library of Concurrent Data Structures. [BSD]

GUI

• GacUI (⭐2.6k) - GPU Accelerated C++ User Interface, with WYSIWYG developing tools, XML supports, built-in data binding and MVVM features. [Ms-PL]

Miscellaneous

• FastFormat - Fast, Safe C++ Formatting inspired by log4j and Pantheios. [Simplified BSD]

JSON

• json (⭐49k) ⚡ - JSON for Modern C++. [MIT] website

Math

• Versor - A (fast) Generic C++ library for Geometric Algebras, including Euclidean, Projective, Conformal, Spacetime (etc).

Concurrency

• ArrayFire (⭐4.9k) - A general purpose GPU library. [BSD]

Serialization

• cppcodec (⭐680) - Header-only C++11 library to encode/decode base64, base32 and hex with consistent, flexible API. [MIT]

Miscellaneous

• American fuzzy lop a.k.a. afl-fuzz - Crazy fuzzing tool that automatically discovers bugs given time and minimal example input. [Apache2]

Frameworks

• BDE (⭐1.8k) - The BDE Development Environment from Bloomberg Labs. [Apache2]

Game Engine

• Oxygine - A cross-platform 2D C++ game engine. [MIT]

Debug

• benchmark (⭐10k) - Google provided small microbenchmark support library. [Apache2]

• Google Mock (⭐38k) - A library for writing and using C++ mock classes. [BSD]

• Google Test (⭐38k) - Google C++ Testing Framework. [BSD]

Build Systems

• MesonBuild - An open source build system meant to be both extremely fast, and, even more importantly, as user friendly as possible.

XML

• TinyXML++ (⭐93) - A completely new interface to TinyXML that uses MANY of the C++ strengths. Templates, exceptions, and much better error handling. [MIT]

Database

• LMDB++ (⭐282) - C++11 wrapper for the LMDB embedded database library. [PublicDomain]

Standard Libraries

• C++ Standard Library - A collection of classes and functions, which are written in the core language and part of the C++ ISO Standard itself.

• Standard Template Library - The Standard Template Library (STL).

• C POSIX library - A specification of a C standard library for POSIX systems.

Frameworks

• Cinder - A community-developed, free and open source library for professional-quality creative coding. [BSD]

• ROOT - A set of OO frameworks with all the functionality needed to handle and analyze large amounts of data in a very efficient way. Used at CERN. [LGPL]

Biology

• Wham (⭐108) - Structural variants (SVs) in Genomes by directly applying association tests to BAM files. [MIT]

Concurrency

• Boost.Compute (⭐1.6k) - A C++ GPU Computing Library for OpenCL. [Boost] website

Debug

• CTest - The CMake test driver program. [BSD]

Game Engine

• Allegro - A cross-platform library mainly aimed for video games and multimedia programming. [zlib]

• Godot (⭐107k) - A fully featured, open source, MIT licensed, game engine. [MIT]

GUI

• Sciter - Sciter is an embeddable HTML/CSS/scripting engine aimed to be used as an UI layer of modern desktop applications. [Free/Commercial]

Inter-process communication

• simple-rpc-cpp (⭐42) - A simple RPC wrapper generator to C/C++ functions. [BSD]

Machine Learning

• Minerva (⭐705) - A fast and flexible system for deep learning. [Apache2]

Web Application Framework

• Civetweb (⭐3.3k) - Provides easy to use, powerful, C/C++ embeddable web server with optional CGI, SSL and Lua support. [MIT]

Online Compiler

• CompileOnline - Compile and Execute C++ online on Linux.

Debugger

• Comparison of debuggers - A list of Debuggers from Wikipedia.

• GDB - GNU Debugger.

Integrated Development Environment

• Microsoft Visual Studio - An IDE from Microsoft.

Build Systems

• CMake - Cross-platform free and open-source software for managing the build process of software using a compiler-independent method. [BSD]

Coding Style

• google-styleguide (⭐39k) - Style guides for Google-originated open-source projects.

Websites

• Standard C++ ⚡ - News, Status & Discussion about Standard C++.

Weblogs

• Coding For Speed - Coding For Speed DOT COM, Less Execution Time.

• Sticky Bits

CLI

• docopt.cpp (⭐1.1k) - A library to generate option parser from docstring. [MIT/Boost]

Other Awesome Projects

• Inqlude - The Qt library archive.

Debugger

• Metashell - An interactive template metaprogramming shell which includes the MDB metadebugger.

Coding Style

• C++ Core Guidelines (⭐45k) - "Official" set of C++ guidelines, reviewed by the author of C++.

Debug

• UnitTest++ (⭐578) - A lightweight unit testing framework for C++. [MIT/X Consortium license]

Frameworks

• Apache C++ Standard Library - STDCXX, A collection of algorithms, containers, iterators, and other fundamental components. [retired] [Apache2]

Debug

• CUTE - C++ Unit Testing Easier. [LGPL3]

Static Code Analysis

• Linticator - Eclipse CDT integration of Pc-/FlexeLint.

Frameworks

• OpenFrameworks (⭐10k) - A cross platform open source toolkit for creative coding in C++. [MIT] website

Database

• redis3m (⭐189) - Wrapper of hiredis with clean C++ interface, supporting sentinel and ready to use patterns. [Apache2]

Miscellaneous

• semver.c (⭐195) - A semver parser and render in ANSI C. [MIT]

Articles

• C++Now 2015 Presentations (⭐202) - Presentation materials presented at C++Now 2015.

CLI

• gflags - Commandline flags module for C++. [BSD]

Containers

• LSHBOX (⭐292) - A c++ toolbox of locality-sensitive hashing (LSH), provides several popular LSH algorithms, also support Python and MATLAB. [GPL]

Physics

• Box2D (⭐9.5k) - A 2D physics engine for games. [BSD-like]

BitTorrent

• jech/dht (⭐706) - BitTorrent DHT library in C. [MIT]

• libtorrent (⭐5.8k) (a.k.a. libtorrent-rasterbar) - An efficient feature complete C++ bittorrent implementation. [BSD]

• LibTorrent (⭐966) (a.k.a. libtorrent-rakshasa) - BitTorrent library. [GPL]

• libutp (⭐1.2k) - uTorrent Transport Protocol library. [MIT]

GUI

• CEGUI - Flexible, cross-platform GUI library.

Image Processing

• GD (⭐964) - GD Graphics Library, famously used in PHP for image loading/manipulation & thumbnail generation. [custom permissive license, requires mention in user docs] website

Logging

• G3log (⭐950) - Asynchronous logger with Dynamic Sinks. [PublicDomain]

• reckless (⭐507) - Low-latency, high-throughput, asynchronous logging library for C++. [MIT]

Math

• LibTomMath (⭐775) - A free open source portable number theoretic multiple-precision integer library written entirely in C. [PublicDomain & WTFPL] website

Coding Style Tools

• ClangFormat - A tool to format C/C++/Obj-C code.

• Clang-Tidy - Clang-based C++ linter tool.

Coding Style

• LLVM Coding Standards

Math

• MIRACL (⭐692) - A Multiprecision Integer and Rational Arithmetic Cryptographic Library. [AGPL]

Miscellaneous

• access_profiler (⭐79) - A tool to count accesses to member variables in c++ programs. [GPL3]

Audio

• SELA (⭐214) - SimplE Lossless Audio. [MIT]

Game Engine

• Panda3D (⭐5k) - A game engine, a framework for 3D rendering and game development for Python and C++ programs. [Modified BSD] website

Networking

• cpr (⭐7.3k) - A modern C++ HTTP requests library with a simple but powerful interface. Modeled after the Python Requests module. [MIT] website

Cryptography

• s2n (⭐4.7k) - An implementation of the TLS/SSL protocols. [Apache]

Database

• MongoDB C Driver (⭐861) - MongoDB client library for C. [Apache2]

• MongoDB C++ Driver (⭐1.1k) - C++ driver for MongoDB. [Apache2]

• MongoDB Libbson (⭐347) - A BSON utility library. [Apache2]

Debug

• Celero (⭐862) - C++ Benchmarking Framework. [Apache2]

Graphics

• GLFW (⭐15k) - A simple, cross-platform OpenGL wrangling library. [zlib/libpng]

• OpenSubdiv (⭐3k) - Pixar's library for evaluating and rendering subdivision surfaces on CPU and GPU. [Modified Apache2]

• OpenVDB - Library and tools for storing, editing, and rendering volumetric datasets. [MPL2]

• Partio (⭐491) - Library for wrangling particle data, with support for most common file formats. [Modified BSD]

Image Processing

• ITK - An open-source, cross-platform system for image analysis. [Apache2 from ITK 4.0]

• OpenEXR - Cross-platform library for high dynamic range imaging. [Modified BSDF]

• OpenImageIO (⭐2.2k) - Powerful image and texture wrangling library with support for a wide number of common lossy and RAW formats. [Modified BSD]

Logging

• log4cplus (⭐1.7k) - A simple to use C++ logging API providing thread-safe, flexible, and arbitrarily granular control over log management and configuration. [BSD & Apache2]

Miscellaneous

• Mach7 (⭐1.3k) - A Pattern-matching library for C++. [BSD]

Miscellaneous

• ub-canaries (⭐186) - A collection of C/C++ programs that try to get compilers to exploit undefined behavior.

Debugger

• LLDB - The LLDB Debugger.

Weblogs

• ridiculousfish - Will It Optimize?

• Embedded in Academia

Books

• cppbestpractices (⭐8.7k) - Collaborative Collection of C++ Best Practices.

Talks

• Presentation on Hana for C++Now 2015 (⭐10)

Machine Learning

• MeTA (⭐712) - A modern C++ data sciences toolkit. [MIT]

Image Processing

• Video++ (⭐733) - A C++14 high performance video and image processing library. [MIT]

Inter-process communication

• WAMP - Provides RPC and pub/sub messaging patterns. (various implementations, various languages)

JSON

• ujson - µjson is a a small, C++11, UTF-8, JSON library. [MIT]

Math

• QuantLib (⭐6.8k) - A free/open-source library for quantitative finance. [Modified BSD] website

Integrated Development Environment

• color_coded (⭐871) - A vim plugin for libclang-based highlighting. [MIT]

JSON

• json-voorhees (⭐128) - JSON library for C++. Support for C++11. No dependencies, fast and dev-friendly. [Apache2]

Debug

• CMocka - unit testing framework for C with support for mock objects. [Apache2]

Game Engine

• GamePlay (⭐4.8k) - A cross-platform native C++ game framework for creating 2D/3D mobile and desktop games. [Apache2]

Image Processing

• libvips (⭐67) - A fast image processing library with low memory needs. [LGPL] website

Inter-process communication

• Apache Thrift - Efficient cross-language IPC/RPC, works between C++, Java, Python, PHP, C#, and many more other languages. Originally developed by Facebook. [Apache2]

Compiler

• Oracle Solaris Studio - C, C++ and Fortran compiler for SPARC and x86. Supports C++11. Available on Linux and Solaris. [OTN Developer License]

Inter-process communication

• gRPC (⭐44k) - A high performance, open source, general-purpose RPC framework. [BSD] website

Compiler

• 8cc (⭐6.4k) - A Small C Compiler.

• c (⭐2.2k) - Compile and execute C "scripts" in one go! [MIT]

Frameworks

• Boost ⚡ - A large collection of generic C++ libraries. [Boost] website

JSON

• RapidJSON (⭐15k) ⚡ - A fast JSON parser/generator for C++ with both SAX/DOM style API. [MIT] website

Machine Learning

• OpenCV (⭐86k) ⚡ - Open Source Computer Vision Library. [BSD] website

Networking

• POCO ⚡ - C++ class libraries and frameworks for building network- and internet-based applications that run on desktop, server, mobile and embedded systems. [Boost] website

Talks

• CppCon Talks ⚡ - The C++ conference.

Cryptography

• retter (⭐113) - A collection of hash functions, ciphers, tools, libraries, and materials related to cryptography.

Inter-process communication

• libjson-rpc-cpp (⭐984) - JSON-RPC framework for C++ servers and clients. [MIT]

• nanomsg (⭐6.3k) - A simple high-performance implementation of several "scalability protocols". [MIT] website

• xmlrpc-c - A lightweight RPC library based on XML and HTTP. [BSD]

Frameworks

• Reason - A cross platform framework designed to bring the ease of use of Java, .Net, or Python to developers who require the performance and strength of C++. [GPL2]

Compression

• smaz (⭐1.2k) - Small strings compression library. [BSD]

Cryptography

• GnuTLS - A secure communications library implementing the SSL, TLS and DTLS protocols. [LGPL2.1]

Debug

• CppUnit - C++ port of JUnit. [LGPL2]

• libtap (⭐261) - Write tests in C. [GPL2]

Game Engine

• delta3d - A robust simulation platform. [LGPL2]

• Polycode (⭐2.4k) - A cross-platform framework for creative code in C++ (with Lua bindings). [MIT] website

GUI

• FLTK - Fast, light, cross-platform C++ GUI toolkit. [LGPL2]

Graphics

• Cairo - A 2D graphics library with support for multiple output devices. [LGPL2 or Mozilla MPL]

Image Processing

• FreeImage - An open source library that supports popular graphics image formats and others as needed by today's multimedia applications. [GPL2 or GPL3]

JSON

• frozen (⭐761) - JSON parser and generator for C/C++. [GPL & GPL2]

• QJson (⭐292) - A qt-based library that maps JSON data to QVariant objects. [LGPL2]

Math

• Apophenia (⭐206) - A C library for statistical and scientific computing. [GPL2]

• GMTL - Graphics Math Template Library is a collection of tools implementing Graphics primitives in generalized ways. [GPL2]

Networking

• Mongoose (⭐13k) - Extremely lightweight webserver. [GPL2]

• Onion (⭐2.1k) - HTTP server library in C designed to be lightweight and easy to use. [Apache2/GPL2]

• Tufão (⭐594) - An asynchronous web framework for C++ built on top of Qt. [LGPL2]

Scripting

• V7 (⭐1.5k) - An embedded JavaScript engine. [GPL2]

Video

• FFmpeg - A complete, cross-platform solution to record, convert and stream audio and video. [LGPL2/GPL2]

XML

• libxml++ - An XML Parser for C++. [LGPL2]

Miscellaneous

• Better String - An alternative to the string library for C which is more functional and does not have buffer overflow overrun problems. Also includes a C++ wrapper. [BSD, GPL2]

• Remote Call Framework - Inter-process communication framework for C++. [GPL2/Proprietary]

• Stage (⭐421) - Mobile robot simulator. [GPL2]

• ZBar - A barcode scanner library, which allows to scan photos/images/video streams for barcodes and return their value. [LGPL2]

Frameworks

• APR - Apache Portable Runtime. Another library of cross-platform utility functions. [Apache2]

Miscellaneous

• Klib (⭐4.6k) - Small and lightweight implementations of common algorithms and data structures. [MIT]

• libnih (⭐91) - A lightweight library of C functions and structures. [GPL2.1]

Other Awesome Projects

• awesome-algorithms (⭐25k) - A curated list of awesome places to learn and/or practice algorithms.

Websites

• C FAQ - C frequently asked questions.

• C++ FAQ - C++ frequently asked questions.

• C++ FQA Lite - C++ frequently questioned answers.

• Guru of the Week - A regular series of C++ programming problems created and written by Herb Sutter.

JSON

• JsonCpp (⭐8.8k) - A C++ library for interacting with JSON. [MIT]

Serial Port

• Serial Communication Library (⭐2.4k) - Cross-platform, Serial Port library written in C++. [MIT] website

Miscellaneous

• QtVerbalExpressions (⭐66) - This Qt lib is based off of the C++ VerbalExpressions library. [MIT]

• sigslot - C++ Signal/Slot Library. [PublicDomain]

• ZXing (⭐34k) - An open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages. [Apache]

Online Compiler

• Rextester - Online compiler which provides several compilers(Clang, GCC, MSVC) and several editors.

Coding Style

• C++ Dos and Don'ts - The Chromium Projects > For Developers > Coding Style > C++ Dos and Don'ts.

Logging

• spdlog (⭐28k) - Super fast, header only, C++ logging library.

Networking

• Proxygen (⭐8.3k) - Facebook's collection of C++ HTTP libraries including an easy to use HTTP server. [BSD]

Other Awesome Projects

• Projects (⭐47k) - A list of practical projects that anyone can solve in any programming language.

Physics

• Newton Dynamics (⭐1k) - An integrated solution for real time simulation of physics environments. [zlib]

Videos

• Bo Qian's playlist - Boost Library, C++ Standard Library, Modern C++, Advanced C++, Advanced STL, ...

Biology

• libsequence - A C++ library for representing and analyzing population genetics data. [GPL]

• SeqAn - Algorithms and data structures for the analysis of sequences with the focus on biological data. [BSD/3-clause]

• Vcflib (⭐668) - A C++ library for parsing and manipulating VCF files. [MIT]

Cryptography

• Botan - A crypto library for C++. [BSD-2]

• GnuPG - A complete and free implementation of the OpenPGP standard. [GPL]

• LibreSSL - A free version of the SSL/TLS protocol forked from OpenSSL in 2014. [?]

• LibTomCrypt (⭐1.8k) - A fairly comprehensive, modular and portable cryptographic toolkit. [WTFPL]

• Nettle - A low-level cryptographic library. [LGPL]

Image Processing

• VIGRA (⭐436) - A generic C++ computer vision library for image analysis. [MIT X11]

JSON

• YAJL (⭐2.2k) - A fast streaming JSON parsing library in C. [ISC]

Robotics

• MOOS-IvP - A set of open source C++ modules for providing autonomy on robotic platforms, in particular autonomous marine vehicles.

• MRPT - Mobile Robot Programming Toolkit. [BSD]

• PCL (⭐11k) - Point Cloud Library is a standalone, large scale, open project for 2D/3D image and point cloud processing. [BSD] website

• Robotics Library (RL) - A self-contained C++ library for robot kinematics, motion planning and control. [BSD]

• ROS - Robot Operating System provides libraries and tools to help software developers create robot applications. [BSD]

Virtual Machines

• MicroPython (⭐21k) - Aims to put an implementation of Python 3.x on a microcontroller. [MIT]

Miscellaneous

• gcc-poison (⭐194) - A simple header file for developers to ban unsafe C/C++ functions from applications.

Integrated Development Environment

• AppCode - an IDE for Objective-C, C, C++, and JavaScript development built on JetBrains’ IntelliJ IDEA platform.

• Irony-mode (⭐916) - A C/C++ minor mode for Emacs powered by libclang.

• rtags (⭐1.8k) - A c/c++ client/server indexer with for integration with emacs based on clang.

Build Systems

• CPM (⭐749) - A C++ Package Manager based on CMake and Git.

• FASTBuild - High performance, open-source build system supporting highly scalable compilation, caching and network distribution.

• tundra (⭐468) - High-performance code build system designed to give the best possible incremental build times even for very large software projects.

• tup - File-based build system that monitors in the background for changed files.

Static Code Analysis

• Clang Static Analyzer - A source code analysis tool that finds bugs in C, C++, and Objective-C programs.

JSON

• Jansson (⭐3.3k) - C library for encoding, decoding and manipulating JSON data. [MIT]

• jbson (⭐37) - jbson is a library for building & iterating BSON data, and JSON documents in C++14. [Boost]

• JeayeSON (⭐136) - A very sane (header only) C++ JSON library. [BSD]

• JSON++ (⭐548) - A JSON parser in C++. [MIT]

• json11 (⭐2.6k) - A tiny JSON library for C++11. [MIT]

• libjson (⭐293) - A JSON parser and printer library in C. easy to integrate with any model. [LGPL]

• PicoJSON (⭐1.1k) - A header-file-only, JSON parser serializer in C++. [BSD]

• qt-json (⭐331) - A simple class for parsing JSON data into a QVariant hierarchy and vice versa. [GPLv3]

Networking

• RakNet (⭐3.4k) - A cross platform, open source, C++ networking engine for game programmers. [BSD]

Serialization

• FlatBuffers (⭐26k) - A Memory efficient serialization library. [Apache2]

Talks

• Quick game development with C++11/C++14 (⭐86) - CppCon 2014 talk by Vittorio Romeo.

Videos

• C++ Programming Tutorials Playlist - TheNewBoston Official Buckys C++ Programming Tutorials Playlist.

• C Programming Tutorials - All of TheNewBoston's C programming tutorials are right here.

Websites

• CppCon - The C++ Conference.

• Meeting C++

Weblogs

• Eric Niebler

Other Awesome Projects

• lists (⭐11k) - List of (awesome) lists curated on GitHub.

• free-programming-books (⭐383k) - List of Freely Available Programming Books.

Frameworks

• STLport - An exemplary version of STL. [Free]

JSON

• jute (⭐73) - Very simple C++ JSON Parser. [PublicDomain]

• libjson - Lightweight JSON library. [?]

Database

• MySQL++ - A C++ wrapper for MySQL's C API. [LGPL]

Scientific Computing

• FFTW - A C library for computing the DFT in one or more dimensions. [GPL]

• GSL - GNU scientific library. [GPL]

GUI

• QCustomPlot - Qt plotting widget without further dependencies. [GPLv3]

Graphics

• OpenSceneGraph - An open source high performance 3D graphics toolkit. [OSGPL]

Image Processing

• GDCM - Grassroots DICOM library.

• VTK - Open-source, freely available software system for 3D computer graphics, image processing and visualization. [BSD]

Internationalization

• IBM ICU - A set of C/C++ and Java libraries providing Unicode and Globalization support. [ICU]

• libiconv - An encoding conversion library between different character encodings. [GPL]

Multimedia

• LIVE555 Streaming Media - Multimedia streaming library using open standard protocols (RTP/RTCP, RTSP, SIP). [LGPL]

Networking

• libcurl - Multiprotocol file transfer library. [MIT/X derivate license]

Miscellaneous

• Scintilla - A free source code editing component. [MIT]

Compiler

• TCC - Tiny C Compiler. [LGPL]

Online Compiler

• Compiler Explorer - An interactive compiler with assembly output available.

Integrated Development Environment

• Geany - Small, fast, cross-platform IDE. [GPL]

• IBM VisualAge - A family of computer integrated development environments from IBM.

Containers

• Hashmaps (⭐257) - Implementation of open addressing hash table algorithms in C++. [MIT]

JSON

• json-parser (⭐1.3k) - Very low footprint JSON parser written in portable ANSI C. [BSD]

Multimedia

• GStreamer - A library for constructing graphs of media-handling components. [LGPL]

• libVLC - libVLC (VLC SDK) media framework. [GPL]

Networking

• cpp-netlib - A collection of open-source libraries for high level network programming. [Boost]

• Dyad.c (⭐1.5k) - Asynchronous networking for C. [MIT]

• Muduo (⭐16k) - A C++ non-blocking network library for multi-threaded server in Linux. [BSD]

• WebSocket++ (⭐7.6k) - C++/Boost Asio based websocket client/server library. [BSD]

Physics

• Bullet (⭐14k) - A 3D physics engine for games. [zlib] website

• Chipmunk (⭐2.4k) - A fast and lightweight 2D game physics library. [MIT] website

• LiquidFun (⭐4.9k) - A 2D physics engine for games. [BSD-like]

• ODE - Open Dynamics Engine - An open source, high performance library for simulating rigid body dynamics. [BSD&LGPL]

• ofxBox2d (⭐327) - openFrameworks wrapper for Box2D. [BSD-like]

Scripting

• ChaiScript (⭐3.1k) - An easy to use embedded scripting language for C++. [BSD] website

• Lua - A minimal and fast scripting engine for configuration files and basic application scripting. [MIT]

• luacxx (⭐159) - C++11 API for creating Lua bindings. [MIT]

Video

• libvpx - VP8/VP9 Codec SDK. [BSD]

• Theora - A free and open video compression format. [BSD]

Virtual Machines

• CarpVM (⭐985) - "interesting" VM in C. Let's see how this goes. [GPLv3]

• TinyVM (⭐3.3k) - A small, fast, lightweight virtual machine written in pure ANSI C. [MIT]

XML

• Expat - An XML parser library written in C. [MIT]

• Libxml2 - The XML C parser and toolkit of Gnome. [MIT]

• PugiXML - A light-weight, simple and fast XML parser for C++ with XPath support. [MIT]

• RapidXml - An attempt to create the fastest XML parser possible, while retaining useability, portability and reasonable W3C compatibility. [Boost]

• TinyXML - A simple, small, minimal, C++ XML parser that can be easily integrating into other programs. [zlib]

• TinyXML2 (⭐5.7k) - A simple, small, efficient, C++ XML parser that can be easily integrating into other programs. [zlib]

• Xerces-C++ - A validating XML parser written in a portable subset of C++. [Apache2]

Miscellaneous

• casacore - A set of c++ core libraries derived from aips++. [LGPL]

• cxx-prettyprint (⭐567) - A pretty printing library for C++ containers. [Boost]

• libcpuid (⭐507) - A small C library for x86 CPU detection and feature extraction. [BSD]

• libevil (⭐30) - The Evil License Manager. [GPLv3]

• SDS (⭐5.4k) - Simple Dynamic Strings library for C. [BSD]

Online Compiler

• coliru - Online compiler/shell with support for various C++ compilers.

API Design

• Beautiful Native Libraries

Weblogs

• Paul Fultz II's Blog

Concurrency

• Bolt (⭐379) - A C++ template library optimized for GPUs. [Apache2]

• Libclsph (⭐52) - An OpenCL based GPU accelerated SPH fluid simulation library. [MIT]

• Thrust - A parallel algorithms library which resembles the C++ Standard Template Library (STL). [Apache2]

• VexCL (⭐718) - A C++ vector expression template library for OpenCL/CUDA. [MIT]

Database

• hiberlite (⭐720) - C++ Object-relational mapping for sqlite3. [BSD]

• Hiredis (⭐6.7k) - A minimalistic C client library for the Redis database. [BSD]

• RocksDB (⭐32k) - Embedded key-value store for fast storage from facebook. [BSD]

• SQLite - A completely embedded, full-featured relational database in a few 100k that you can include right into your project. [PublicDomain]

Debug

• ig-debugheap (⭐184) - Multiplatform debug heap useful for tracking down memory errors. [BSD]

• Remotery (⭐3.3k) - Single C File Profiler with Web Viewer. [Apache2]

GUI

• GTK+ - A multi-platform toolkit for creating graphical user interfaces. [LGPL]

• gtkmm - The official C++ interface for the popular GUI library GTK+. [LGPL]

• imgui (⭐72k) - Immediate Mode Graphical User Interface with minimal dependencies. [MIT]

• Qwt - Qt Widgets for Technical Applications. [Own based on LGPL]

• QwtPlot3D - A feature-rich Qt/OpenGL-based C++ programming library, providing essentially a bunch of 3D-widgets. [zlib]

• wxWidgets - A C++ library that lets developers create applications for Windows, Mac OS X, Linux and other platforms with a single code base. [Own LGPL]

Graphics

• bgfx (⭐17k) - A cross-platform rendering library. [BSD]

• Horde3D (⭐1.6k) - A small 3D rendering and animation engine. [EPL]

• Panda3D - A framework for 3D rendering and game development for Python and C++. [BSD]

• urho3d (⭐4.7k) - Cross-platform rendering and game engine. [Many different, mostly MIT]

Logging

• Log4cpp - A library of C++ classes for flexible logging to files, syslog, IDSA and other destinations. [LGPL]

• templog - A very small and lightweight C++ library which you can use to add logging to your C++ applications. [Boost]

Machine Learning

• Caffe (⭐35k) - A fast framework for neural networks. [BSD]

• CCV (⭐7.2k) - C-based/Cached/Core Computer Vision Library, A Modern Computer Vision Library. [BSD]

• Recommender (⭐268) - C library for product recommendations/suggestions using collaborative filtering (CF). [BSD]

• SHOGUN (⭐3.1k) - The Shogun Machine Learning Toolbox. [GPLv3]

• sofia-ml - The suite of fast incremental algorithms for machine learning. [Apache2]

Math

• ceres-solver - C++ library for modeling and solving large complicated nonlinear least squares problems from google. [BSD]

Serialization

• protobuf-c (⭐2.9k) - Protocol Buffers implementation in C. [BSD]

Standard Libraries

• ISO C++ Standards Committee - ISO/IEC JTC1/SC22/WG21 - The C++ Standards Committee. website

Frameworks

• ASL - Adobe Source Libraries provides peer-reviewed and portable C++ source libraries. [MIT]

• ffead-cpp (⭐736) - Framework for Enterprise Application Development. [Apache2]

• Folly (⭐30k) - An open-source C++ library developed and used at Facebook. [Apache2]

• JUCE (⭐8.1k) - An all-encompassing C++ class library for developing cross-platform software. [Core-Module: ISC, Rest: GPL2/GPL3/Proprietary] website

• libPhenom (⭐1.7k) - libPhenom is an eventing framework for building high performance and high scalability systems in C. [Apache2]