Awesome Scala Overview

A community driven list of useful Scala libraries, frameworks and software.

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Awesome Scala Awesome

A community driven list of useful Scala libraries, frameworks and software. This is not a catalog of all the libraries, just a starting point for your explorations. Inspired by awesome-python (猸145k). Other amazingly awesome lists can be found in the awesome-awesomeness (猸29k) list.

Also awesome is Scaladex, the searchable, tagged, and centralized index of Scala libraries.

Projects with over 500 stargazers are in bold.

Contributing

Your contributions are always welcome! Please submit a pull request or create an issue to add a new framework, library or software to the list. Do not submit a project that hasn鈥檛 been updated in the past 6 months or is not awesome.

Don't modify README.md in your pull request. It is automatically generated. Modify template.md instead.

Table of Contents

Archive and Compression

Name Description GitHub Activity
SevenZ4S (猸42) SevenZip library for Scala, easy to use. GitHub stars GitHub commit activity

Artificial Intelligence

Name Description GitHub Activity
cilib (猸122) Typesafe, purely functional Computational Intelligence GitHub stars GitHub commit activity

Database

Database access libraries in Scala.

Name Description GitHub Activity
akka-persistence-gcp-datastore (猸19) akka-persistence-gcp-datastore is a journal and snapshot store plugin for akka-persistence using google cloud firestore in datastore mode. GitHub stars GitHub commit activity
anorm (猸222) The Anorm database library GitHub stars GitHub commit activity
casbah Casbah is now officially end-of-life (EOL). GitHub stars GitHub commit activity
clickhouse-scala-client (猸106) Clickhouse Scala Client with Reactive Streams support GitHub stars GitHub commit activity
couchbase-jvm-clients (猸34) The Couchbase Monorepo for JVM Clients: Java, Scala, io-core鈥 GitHub stars GitHub commit activity
couchdb-scala (猸65) A purely functional Scala client for CouchDB GitHub stars GitHub commit activity
doobie Functional JDBC layer for Scala. GitHub stars GitHub commit activity
elastic4s Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client GitHub stars GitHub commit activity
etcd4s (猸31) Scala etcd client implementing V3 APIs GitHub stars GitHub commit activity
finagle-postgres (猸79) PostgreSQL protocol support for Finagle GitHub stars GitHub commit activity
laserdisc (猸88) A Future-free Fs2 native pure FP Redis client GitHub stars GitHub commit activity
mysql-binlog-stream (猸11) None GitHub stars GitHub commit activity
longevity (猸103) A Persistence Framework for Scala and NoSQL GitHub stars GitHub commit activity
lucene4s (猸52) Light-weight convenience wrapper around Lucene to simplify complex tasks and add Scala sugar. GitHub stars GitHub commit activity
mapperdao (猸14) A Scala ORM library GitHub stars GitHub commit activity
morpheus (猸100) Reactive type-safe Scala driver for SQL databases GitHub stars GitHub commit activity
neotypes (猸145) Scala lightweight, type-safe, asynchronous driver for neo4j GitHub stars GitHub commit activity
phantom Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise GitHub stars GitHub commit activity
pulsar4s (猸205) Idiomatic, typesafe, and reactive Scala client for Apache Pulsar GitHub stars GitHub commit activity
zio-quill Compile-time Language Integrated Queries for Scala GitHub stars GitHub commit activity
reactivecouchbase-rs-core (猸27) New ReactiveCouchbase driver using reactive-streams GitHub stars GitHub commit activity
ReactiveMongo 馃崈 Non-blocking, Reactive MongoDB Driver for Scala GitHub stars GitHub commit activity
rediscala Non-blocking, Reactive Redis driver for Scala (with Sentinel support) GitHub stars GitHub commit activity
relate (猸164) Performant database access in Scala GitHub stars GitHub commit activity
salat (猸486) Salat is a simple serialization library for case classes. GitHub stars GitHub commit activity
sangria Scala GraphQL implementation GitHub stars GitHub commit activity
scala-activerecord (猸321) ActiveRecord-like ORM library for Scala GitHub stars GitHub commit activity
scala-forklift (猸188) Type-safe data migration tool for Slick, Git and beyond. GitHub stars GitHub commit activity
scala-redis A scala library for connecting to a redis server, or a cluster of redis nodes using consistent hashing on the client side. GitHub stars GitHub commit activity
scala-sql (猸86) scala SQL api GitHub stars GitHub commit activity
scalarelational (猸58) Type-Safe framework for defining, modifying, and querying SQL databases GitHub stars GitHub commit activity
scalikejdbc A tidy SQL-based DB access library for Scala developers. This library naturally wraps JDBC APIs and provides you easy-to-use APIs. GitHub stars GitHub commit activity
scanamo (猸313) Simpler DynamoDB access for Scala GitHub stars GitHub commit activity
scredis (猸154) Non-blocking, ultra-fast Scala Redis client built on top of Akka IO, used in production at Livestream GitHub stars GitHub commit activity
scruid (猸111) Scala + Druid: Scruid. A library that allows you to compose queries in Scala, and parse the result back into typesafe classes. GitHub stars GitHub commit activity
shade (猸109) Memcached client for Scala GitHub stars GitHub commit activity
slick Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala GitHub stars GitHub commit activity
slick-pg Slick extensions for PostgreSQL GitHub stars GitHub commit activity
squeryl A Scala DSL for talking with databases with minimum verbosity and maximum type safety GitHub stars GitHub commit activity
molecule (猸66) Non-blocking asynchronous domain-customizable database query language for Scala and Scala.js against the Datomic database. GitHub stars GitHub commit activity
zio-redis (猸90) A ZIO-based redis client GitHub stars GitHub commit activity
skunk A data access library for Scala + Postgres. GitHub stars GitHub commit activity
kvs (猸17) Highly available distributed strong eventual consistent and sequentially consistent storage with feeds and search GitHub stars GitHub commit activity

Messaging

Name Description GitHub Activity
op-rabbit (猸236) The Opinionated RabbitMQ Library for Scala and Akka GitHub stars GitHub commit activity

Graphical User Interfaces

Libraries for creation of graphical user interfaces

Name Description GitHub Activity
scalafx ScalaFX simplifies creation of JavaFX-based user interfaces in Scala GitHub stars GitHub commit activity

Web Frameworks

Scala frameworks for web development.

Name Description GitHub Activity
analogweb-scala (猸12) Tiny High Performance HTTP Server for Scala GitHub stars GitHub commit activity
chaos (猸250) A lightweight framework for writing REST services in Scala. GitHub stars GitHub commit activity
cask (猸423) Cask: a Scala HTTP micro-framework GitHub stars GitHub commit activity
colossus I/O and Microservice library for Scala GitHub stars GitHub commit activity
finatra Fast, testable, Scala services built on TwitterServer and Finagle GitHub stars GitHub commit activity
framework Lift Framework GitHub stars GitHub commit activity
peregrine (猸14) Async lightweight Scala web framework GitHub stars GitHub commit activity
playframework Play Framework GitHub stars GitHub commit activity
pagelets (猸78) A module for the Play Framework to build highly modular applications GitHub stars GitHub commit activity
reactive (猸216) A simple FRP library and a web UI framework built on it GitHub stars GitHub commit activity
scalajs-react Facebook's React on Scala.JS GitHub stars GitHub commit activity
scalatra Tiny Scala high-performance, async web framework, inspired by Sinatra GitHub stars GitHub commit activity
skinny-framework 馃殱 "Scala on Rails" - A full-stack web app framework for rapid development in Scala GitHub stars GitHub commit activity
unfiltered A toolkit for servicing HTTP requests in Scala GitHub stars GitHub commit activity
xitrum (猸450) Async and clustered Scala web framework and HTTP(S) server GitHub stars GitHub commit activity
youi (猸206) Next generation user interface and application development in Scala and Scala.js for web, mobile, and desktop. GitHub stars GitHub commit activity

Reactive Web Frameworks

Scala libraries for Reactive Web development

Name Description GitHub Activity
Binding.scala Reactive data-binding for Scala GitHub stars GitHub commit activity
korolev Single Page Applications running on the server side. GitHub stars GitHub commit activity
udash-core (猸428) Scala framework for building beautiful and maintainable web applications. GitHub stars GitHub commit activity
vertx-lang-scala (猸111) Vert.x for Scala GitHub stars GitHub commit activity

Data Binding and Validation

Scala libraries for data binding and validation

Name Description GitHub Activity
accord Accord: A sane validation library for Scala GitHub stars GitHub commit activity
dupin (猸36) Minimal, idiomatic, customizable validation Scala library. GitHub stars GitHub commit activity
octopus (猸147) Scala library for boilerplate-free validation GitHub stars GitHub commit activity
veto (猸6) If you don't agree with the data GitHub stars GitHub commit activity
fields (猸37) Scala validation library GitHub stars GitHub commit activity

i18n

Scala libraries for i18n.

Name Description GitHub Activity
scala-xgettext (猸25) Scala compiler plugin that acts like GNU xgettext command to extract i18n strings in Scala source code files to Gettext .po file GitHub stars GitHub commit activity
scaposer (猸37) GNU Gettext .po file loader for Scala GitHub stars GitHub commit activity

Authentication

Libraries for implementing authentications schemes.

Name Description GitHub Activity
akka-http-session (猸443) Web & mobile client-side akka-http sessions, with optional JWT support GitHub stars GitHub commit activity
aws-request-signer (猸21) Scala library to sign HTTP requests to AWS services. GitHub stars GitHub commit activity
OAuth2-mock-play (猸25) An implementation of an OAuth2 server designed for mocking/testing GitHub stars GitHub commit activity
play-googleauth (猸32) Simple play module for authenticating against Google GitHub stars GitHub commit activity
play-pac4j (猸391) Security library for Play framework 2 in Java and Scala: OAuth, CAS, SAML, OpenID Connect, LDAP, JWT... GitHub stars GitHub commit activity
play2-auth Play2.x Authentication and Authorization module GitHub stars GitHub commit activity
scala-oauth2-provider OAuth 2.0 server-side implementation written in Scala GitHub stars GitHub commit activity
securesocial A module that provides OAuth, OAuth2 and OpenID authentication for Play Framework applications GitHub stars GitHub commit activity

Cryptography

Cryptography and Encryption Libraries.

Name Description GitHub Activity
scrypto (猸193) Cryptographic primitives for Scala GitHub stars GitHub commit activity
tsec (猸350) Type-safe general-cryptography library - https://jmcardon.github.io/tsec/ GitHub stars GitHub commit activity
jose (猸13) Extensible JOSE library for Scala GitHub stars GitHub commit activity

Testing

Libraries for code testing.

Name Description GitHub Activity
cornichon (猸220) Scala DSL for testing HTTP JSON API GitHub stars GitHub commit activity
gatling Modern Load Testing as Code GitHub stars GitHub commit activity
minitest (猸178) The super light testing library for Scala and Scala.js GitHub stars GitHub commit activity
mockito-scala (猸300) Mockito for Scala language GitHub stars GitHub commit activity
munit (猸336) Scala testing library with actionable errors and extensible APIs GitHub stars GitHub commit activity
scalacheck Property-based testing for Scala GitHub stars GitHub commit activity
scalameter Microbenchmarking and performance regression testing framework for the JVM platform. GitHub stars GitHub commit activity
ScalaMock (猸468) Native Scala mocking framework GitHub stars GitHub commit activity
scalaprops (猸273) property based testing library for Scala GitHub stars GitHub commit activity
scalatest A testing tool for Scala and Java developers GitHub stars GitHub commit activity
scalive (猸199) Connect a Scala REPL to running JVM processes without any prior setup GitHub stars GitHub commit activity
specs2 Software Specifications for Scala GitHub stars GitHub commit activity
stryker4s (猸165) Mutation testing for Scala GitHub stars GitHub commit activity
weaver-test (猸322) A test framework that runs everything in parallel. GitHub stars GitHub commit activity
testcontainers-scala Docker containers for testing in scala GitHub stars GitHub commit activity
utest (猸459) A simple testing framework for Scala GitHub stars GitHub commit activity

JSON

Libraries for work with json.

Name Description GitHub Activity
argonaut Purely functional JSON parser and library in scala. GitHub stars GitHub commit activity
borer (猸178) Efficient CBOR and JSON (de)serialization in Scala GitHub stars GitHub commit activity
circe Yet another JSON library for Scala GitHub stars GitHub commit activity
diffson (猸292) A scala diff/patch library for Json GitHub stars GitHub commit activity
jackson-module-scala (猸476) Add-on module for Jackson (https://github.com/FasterXML/jackson (猸7.8k)) to support Scala-specific datatypes GitHub stars GitHub commit activity
jawn (猸419) Jawn is for parsing jay-sawn (JSON) GitHub stars GitHub commit activity
json4s JSON library GitHub stars GitHub commit activity
jsoniter-scala Scala macros for compile-time generation of safe and ultra-fast JSON codecs GitHub stars GitHub commit activity
json (猸11) Persist-Json, a Fast Json Parser Written in Scala GitHub stars GitHub commit activity
ninny-json (猸20) JSON typeclasses that know the difference between null and absent fields GitHub stars GitHub commit activity
play-json (猸326) The Play JSON library GitHub stars GitHub commit activity
pushka (猸74) ABANDONED Pure Scala serialization library with annotations GitHub stars GitHub commit activity
sbt-json (猸31) sbt plugin that generates Scala case classes for easy, statically typed and implicit access of JSON data e.g. from API responses GitHub stars GitHub commit activity
scala-jsonapi (猸108) Scala support library for integrating the JSON API spec with Spray, Play! or Circe GitHub stars GitHub commit activity
ScalaJack (猸110) Fast JSON parser/generator for Scala GitHub stars GitHub commit activity
spray-json A lightweight, clean and simple JSON implementation in Scala GitHub stars GitHub commit activity
zio-json (猸349) Fast, secure JSON library with tight ZIO integration. GitHub stars GitHub commit activity

YAML

Libraries for work with YAML.

Name Description GitHub Activity
moultingyaml (猸96) Scala wrapper for SnakeYAML GitHub stars GitHub commit activity

CSV

Libraries for work with CSV.

Name Description GitHub Activity
fm-flatfile (猸10) Scala Library for Reading Flat File Data (CSV/TSV/XLS/XLSX) GitHub stars GitHub commit activity
kantan.csv (猸337) CSV handling library for Scala GitHub stars GitHub commit activity
scala-csv CSV Reader/Writer for Scala GitHub stars GitHub commit activity
spata (猸11) Functional, stream-based CSV processor for Scala GitHub stars GitHub commit activity

Serialization

Libraries for serializing and deserializing data for storage or transport.

Name Description GitHub Activity
avro-codegen (猸9) Scala code generator for Avro schemas. GitHub stars GitHub commit activity
borer (猸178) Efficient CBOR and JSON (de)serialization in Scala GitHub stars GitHub commit activity
avro4s Avro schema generation and serialization / deserialization for Scala GitHub stars GitHub commit activity
chill Scala extensions for the Kryo serialization library GitHub stars GitHub commit activity
msgpack-scala (猸93) MessagePack serializer implementation for Scala / msgpack.org[Scala] GitHub stars GitHub commit activity
ScalaPB Protocol buffer compiler for Scala. GitHub stars GitHub commit activity
scodec Scala combinator library for working with binary data GitHub stars GitHub commit activity
scrooge A Thrift parser/generator GitHub stars GitHub commit activity
upickle uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala GitHub stars GitHub commit activity
proto (猸28) Lightweight and fast serialization library for Scala 2/3 based on Protocol Buffers with macros GitHub stars GitHub commit activity

Science and Data Analysis

Libraries for scientific computing, data analysis and numerical processing.

Name Description GitHub Activity
algebird Abstract Algebra for Scala GitHub stars GitHub commit activity
axle (猸65) Axle Domain Specific Language for Scientific Cloud Computing and Visualization GitHub stars GitHub commit activity
BigDL Building Large-Scale AI Applications for Distributed Big Data GitHub stars GitHub commit activity
breeze Breeze is a numerical processing library for Scala. GitHub stars GitHub commit activity
Clustering4Ever (猸124) C4E, a JVM friendly library written in Scala for both local and distributed (Spark) Clustering. GitHub stars GitHub commit activity
doddle-model (猸142) 馃嵃 doddle-model: machine learning in Scala. GitHub stars GitHub commit activity
figaro Figaro Programming Language and Core Libraries GitHub stars GitHub commit activity
libra (猸200) A dimensional analysis library based on dependent types GitHub stars GitHub commit activity
LoMRF (猸76) LoMRF is an open-source implementation of Markov Logic Networks GitHub stars GitHub commit activity
mgo (猸70) Purely functional genetic algorithms for multi-objective optimisation GitHub stars GitHub commit activity
MLLib Machine Learning framework for Spark
NDScala (猸39) N-dimensional arrays in Scala 3. Think NumPy ndarray, but type-safe over shapes, array/axis labels & numeric data types GitHub stars GitHub commit activity
numsca (猸176) numsca is numpy for scala GitHub stars GitHub commit activity
onnx-scala (猸106) An ONNX (Open Neural Network eXchange) API and backend for typeful, functional deep learning in Scala 3 GitHub stars GitHub commit activity
openmole (猸132) Workflow engine for exploration of simulation models using high throughput computing GitHub stars GitHub commit activity
Optimus (猸134) Optimus is a mathematical programming library for Scala. GitHub stars GitHub commit activity
OscaR a Scala toolkit for solving Operations Research problems
rings (猸63) Rings: efficient JVM library for polynomial rings GitHub stars GitHub commit activity
smile Statistical Machine Intelligence & Learning Engine GitHub stars GitHub commit activity
spark-notebook Interactive and Reactive Data Science using Scala and Spark. GitHub stars GitHub commit activity
spire Powerful new number types and numeric abstractions for Scala. GitHub stars GitHub commit activity
squants The Scala API for Quantities, Units of Measure and Dimensional Analysis GitHub stars GitHub commit activity
Synapses (猸64) A group of neural-network libraries for functional and mainstream languages GitHub stars GitHub commit activity
tensorflow_scala TensorFlow API for the Scala Programming Language GitHub stars GitHub commit activity
zeppelin Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more. GitHub stars GitHub commit activity
spark-nlp State of the Art Natural Language Processing GitHub stars GitHub commit activity

Big Data

Name Description GitHub Activity
BIDMach CPU and GPU-accelerated Machine Learning Library GitHub stars GitHub commit activity
flink Apache Flink GitHub stars GitHub commit activity
gridscale (猸26) Scala library for accessing various file, batch systems, job schedulers and grid middlewares. GitHub stars GitHub commit activity
kafka Mirror of Apache Kafka GitHub stars GitHub commit activity
alpakka-kafka Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka. GitHub stars GitHub commit activity
scalding A Scala API for Cascading GitHub stars GitHub commit activity
schemer (猸110) Schema registry for CSV, TSV, JSON, AVRO and Parquet schema. Supports schema inference and GraphQL API. GitHub stars GitHub commit activity
scio A Scala API for Apache Beam and Google Cloud Dataflow. GitHub stars GitHub commit activity
Scrunch A Scala wrapper for Apache Crunch which provides a framework for writing, testing, and running MapReduce pipelines.
spark Apache Spark - A unified analytics engine for large-scale data processing GitHub stars GitHub commit activity
sparkplug (猸27) Spark package to "plug" holes in data using SQL based rules 鈿★笍 馃攲 GitHub stars GitHub commit activity
sparta Real Time Analytics and Data Pipelines based on Spark Streaming GitHub stars GitHub commit activity
summingbird Streaming MapReduce with Scalding and Storm GitHub stars GitHub commit activity
Vegas The missing MatPlotLib for Scala + Spark GitHub stars GitHub commit activity
gallia-core (猸50) A schema-aware Scala library for data transformation GitHub stars GitHub commit activity

Command Line Interfaces

Libraries for creation of command line interfaces

Name Description GitHub Activity
clist (猸103) Command Line Interface Scala Toolkit GitHub stars GitHub commit activity
decline A composable command-line parser for Scala. GitHub stars GitHub commit activity
mainargs (猸147) A small, convenient, dependency-free library for command-line argument parsing in Scala GitHub stars GitHub commit activity
scallop a simple Scala CLI parsing library GitHub stars GitHub commit activity
scopt command line options parsing for Scala GitHub stars GitHub commit activity

Image processing and image analysis

2D and 3D image processing and image analysis

Name Description GitHub Activity
scala-phash (猸16) Image comparison by hash codes GitHub stars GitHub commit activity
scalismo (猸220) Scalable Image Analysis and Shape Modelling GitHub stars GitHub commit activity
scrimage Java, Scala and Kotlin image processing library GitHub stars GitHub commit activity

Sound processing and music

Name Description GitHub Activity
Chromaprint.scala (猸84) Chromaprint/AcoustID audio fingerprinting for the JVM GitHub stars GitHub commit activity
ScalaCollider (猸200) A Scala sound synthesis library based on SuperCollider. GitHub stars GitHub commit activity

Functional Reactive Programming

Event streams, signals, observables, etc.

Name Description GitHub Activity
fs2 Compositional, streaming I/O library for Scala GitHub stars GitHub commit activity
iteratee (猸185) Iteratees for Cats GitHub stars GitHub commit activity
monix Asynchronous, Reactive Programming for Scala and Scala.js. GitHub stars GitHub commit activity
reactors (猸4) A concurrent reactive programming framework. GitHub stars GitHub commit activity
reactor-scala-extensions (猸53) A scala extension for Project Reactor's Flux and Mono GitHub stars GitHub commit activity
REScala (猸67) REScala - reactive programming in OO applications GitHub stars GitHub commit activity
RxScala RxScala 鈥 Reactive Extensions for Scala 鈥 a library for composing asynchronous and event-based programs using observable sequences GitHub stars GitHub commit activity
scala.rx An experimental library for Functional Reactive Programming in Scala GitHub stars GitHub commit activity
zio ZIO 鈥 A type-safe, composable library for async and concurrent programming in Scala GitHub stars GitHub commit activity
SynapseGrid (猸124) SynapseGrid is a framework for constructing dynamic low latency data flow systems. GitHub stars GitHub commit activity
vertx-lang-scala (猸111) Vert.x for Scala GitHub stars GitHub commit activity
wire-signals (猸21) A small and effective event-handling library for Scala GitHub stars GitHub commit activity

Modularization and Dependency Injection

Modularization of applications, dependency injection, etc.

Name Description GitHub Activity
airframe Essential Building Blocks for Scala GitHub stars GitHub commit activity
izumi Productivity-oriented collection of lightweight fancy stuff for Scala toolchain GitHub stars GitHub commit activity
macwire Lightweight and Nonintrusive Scala Dependency Injection Library GitHub stars GitHub commit activity
scala-guice (猸339) Scala extensions for Google Guice GitHub stars GitHub commit activity
scaldi (猸291) Lightweight Scala Dependency Injection Library GitHub stars GitHub commit activity
sclasner (猸10) Scala classpath scanner GitHub stars GitHub commit activity
subcut (猸389) Scala Uniquely Bound Classes Under Traits GitHub stars GitHub commit activity
jam (猸45) Incredibly simple DI Scala library. GitHub stars GitHub commit activity

Distributed Systems

Libraries and frameworks for writing distributed applications.

Name Description GitHub Activity
akka Build highly concurrent, distributed, and resilient message-driven applications on the JVM GitHub stars GitHub commit activity
akka-tracing (猸314) A distributed tracing extension for Akka. Provides integration with Play framework, Spray and Akka HTTP. GitHub stars GitHub commit activity
annette (猸13) Platform to build distributed, scalable, enterprise-wide business applications GitHub stars GitHub commit activity
curiodb Distributed NoSQL Database GitHub stars GitHub commit activity
finagle A fault tolerant, protocol-agnostic RPC system GitHub stars GitHub commit activity
glokka (猸56) Library to register and lookup actors by names in an Akka cluster GitHub stars GitHub commit activity
lagom Reactive Microservices for the JVM GitHub stars GitHub commit activity
parapet (猸131) A purely functional library to build distributed and event-driven systems GitHub stars GitHub commit activity
poppet (猸15) Minimal, type-safe RPC Scala library. GitHub stars GitHub commit activity
reactors (猸258) A foundational framework for distributed programming. GitHub stars GitHub commit activity

Extensions

Scala extensions.

Name Description GitHub Activity
Ammonite Scala Scripting GitHub stars GitHub commit activity
better-files Simple, safe and intuitive Scala I/O GitHub stars GitHub commit activity
blindsight (猸75) Blindsight is a Scala logging API with DSL based structured logging, fluent logging, semantic logging, flow logging, and context aware logging. GitHub stars GitHub commit activity
cassovary Cassovary is a simple big graph processing library for the JVM GitHub stars GitHub commit activity
cats Lightweight, modular, and extensible library for functional programming. GitHub stars GitHub commit activity
chimney Scala library for boilerplate-free, type-safe data transformations GitHub stars GitHub commit activity
chronoscala (猸66) A JSR-310 port of nscala_time GitHub stars GitHub commit activity
Dsl.scala (猸249) A framework to create embedded Domain-Specific Languages in Scala GitHub stars GitHub commit activity
each (猸251) A macro library that converts native imperative syntax to scalaz's monadic expressions GitHub stars GitHub commit activity
eff Eff monad for cats - https://atnos-org.github.io/eff GitHub stars GitHub commit activity
enableIf.scala (猸64) A library that toggles Scala code at compile-time, like #if in C/C++ GitHub stars GitHub commit activity
enumeratum A type-safe, reflection-free, powerful enumeration implementation for Scala with exhaustive pattern match warnings and helpful integrations. GitHub stars GitHub commit activity
Freasy-Monad (猸114) Easy way to create Free Monad using Scala macros with first-class Intellij support. GitHub stars GitHub commit activity
freedsl (猸37) Practical effect composition library based on abstract wrapping type and the free monad GitHub stars GitHub commit activity
freestyle A cohesive & pragmatic framework of FP centric Scala libraries GitHub stars GitHub commit activity
hamsters (猸291) A mini Scala utility library GitHub stars GitHub commit activity
lamma (猸89) Lamma schedule generator for Scala is a professional schedule generation library for periodic schedules like fixed income coupon payment, equity deravitive fixing date generation etc. GitHub stars GitHub commit activity
larray (猸392) Large off-heap arrays and mmap files for Scala and Java GitHub stars GitHub commit activity
log4s (猸170) High-performance SLF4J wrapper for Scala. GitHub stars GitHub commit activity
izumi Productivity-oriented collection of lightweight fancy stuff for Scala toolchain GitHub stars GitHub commit activity
Monocle Optics library for Scala GitHub stars GitHub commit activity
nscala-time A new Scala wrapper for Joda Time based on scala-time GitHub stars GitHub commit activity
quicklens Modify deeply nested case class fields GitHub stars GitHub commit activity
scala-records (猸159) Labeled records for Scala based on structural refinement types and macros. GitHub stars GitHub commit activity
refined Refinement types for Scala GitHub stars GitHub commit activity
scala-async An asynchronous programming facility for Scala GitHub stars GitHub commit activity
scala-graph Graph for Scala is intended to provide basic graph functionality seamlessly fitting into the Scala Collection Library. Like the well known members of scala.collection, Graph for Scala is an in-memory graph library aiming at editing and traversing graphs, finding cycles etc. in a user-friendly way. GitHub stars GitHub commit activity
scala-logging Convenient and performant logging library for Scala wrapping SLF4J. GitHub stars GitHub commit activity
scalameta Library to read, analyze, transform and generate Scala programs GitHub stars GitHub commit activity
Scalactic Small library of utilities related to quality that helps keeping code clear and correct.
scalaz Principled Functional Programming in Scala GitHub stars GitHub commit activity
scribe (猸415) The fastest logging library in the world. Built from scratch in Scala and programmatically configurable. GitHub stars GitHub commit activity
shapeless Generic programming for Scala GitHub stars GitHub commit activity
simulacrum First class syntax support for type classes in Scala GitHub stars GitHub commit activity
squid (猸197) Squid 鈥 type-safe metaprogramming and compilation framework for Scala GitHub stars GitHub commit activity
tinylog tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android GitHub stars GitHub commit activity
util Wonderful reusable code from Twitter GitHub stars GitHub commit activity

Misc

Projects that don't fit into any specific category.

Name Description GitHub Activity
Agora Library of vote-counting algorithms for elections.
Ammonite Scala Scripting GitHub stars GitHub commit activity
aws4s (猸89) Non-blocking AWS SDK for Scala exposing strongly-typed APIs built on top of http4s, fs2 and cats GitHub stars GitHub commit activity
bootzooka Simple project to quickly start developing a Scala-based microservice or web application, without the need to write login, user registration etc. GitHub stars GitHub commit activity
eclair A scala implementation of the Lightning Network. GitHub stars GitHub commit activity
fansi (猸207) Scala/Scala.js library for manipulating Fancy Ansi colored strings GitHub stars GitHub commit activity
figlet4s (猸33) ASCII-art banners in Scala GitHub stars GitHub commit activity
fs2-aws (猸154) fs2 utilities to interact with AWS GitHub stars GitHub commit activity
google4s (猸10) A lean, functional library for Google Cloud Services in Scala GitHub stars GitHub commit activity
google-api-scala (猸19) This API is a wrapper for the google java libraries. Currently mapping Admin Directory, Drive, and Calendar. GitHub stars GitHub commit activity
mailgun4s (猸16) Mailgun API implementation in Scala GitHub stars GitHub commit activity
managerial (猸11) A zero-dependency Scala library for managing resources monadically GitHub stars GitHub commit activity
media4s (猸27) Scala command-line wrapper around ffmpeg, ffprobe, ImageMagick, and other tools relating to media. GitHub stars GitHub commit activity
miniboxing-plugin (猸120) Miniboxing is a program transformation that improves the performance of Scala generics when used with primitive types. It can speed up generic collections by factors between 1.5x and 22x, while maintaining bytecode duplication to a minimum. You can easily add miniboxing to your sbt project: GitHub stars GitHub commit activity
ostinato (猸48) A chess library that runs on the server (Scala) and on the browser (ScalaJS). GitHub stars GitHub commit activity
play-swagger (猸394) Swagger spec generator for play framework GitHub stars GitHub commit activity
PPrint (猸183) Pretty-printing value, types and type-signatures in Scala GitHub stars GitHub commit activity
pureconfig A boilerplate-free library for loading configuration files GitHub stars GitHub commit activity
REPLesent (猸403) A neat little tool to build presentations using the Scala REPL GitHub stars GitHub commit activity
scala-ssh (猸233) Remote shell access via SSH for your Scala applications GitHub stars GitHub commit activity
scala-stm (猸248) A library-based Software Transactional Memory (STM) for Scala, coupled with transactional sets and maps GitHub stars GitHub commit activity
Scavenger An experimental automated theorem prover.
service-chassis (猸7) A scala chassis to get your applications and services bootstrapped quickly GitHub stars GitHub commit activity
spliff (猸42) Efficient diffing in Scala GitHub stars GitHub commit activity
scountries (猸14) Scala library that provides an enumeration of ISO 3166 codes for countries, along with their subdivisions. GitHub stars GitHub commit activity

Android

Scala libraries and wrappers for Android development.

Name Description GitHub Activity
sbt-android An easy-to-use sbt plugin for working with all Android projects GitHub stars GitHub commit activity
scaloid Scaloid makes your Android code easy to understand and maintain. GitHub stars GitHub commit activity

HTTP

Scala libraries and wrappers for HTTP clients.

Name Description GitHub Activity
akka-http The Streaming-first HTTP server/module of Akka GitHub stars GitHub commit activity
reboot (猸430) Scala wrapper for the Java AsyncHttpClient. GitHub stars GitHub commit activity
finch Scala combinator library for building Finagle HTTP services GitHub stars GitHub commit activity
fintrospect (猸92) Implement fast, type-safe HTTP webservices for Finagle GitHub stars GitHub commit activity
http4s A minimal, idiomatic Scala interface for HTTP GitHub stars GitHub commit activity
jefe (猸8) Manages installation, updating, downloading, launching, error reporting, and more for your application. GitHub stars GitHub commit activity
lolhttp (猸94) An HTTP Server and Client library for Scala. GitHub stars GitHub commit activity
requests-scala A Scala port of the popular Python Requests HTTP client: flexible, intuitive, and straightforward to use. GitHub stars GitHub commit activity
RosHTTP (猸124) Unified Scala.js + Scala HTTP client API GitHub stars GitHub commit activity
scalaj-http Simple scala wrapper for HttpURLConnection. OAuth included. GitHub stars GitHub commit activity
scalaxb (猸323) scalaxb is an XML data binding tool for Scala. GitHub stars GitHub commit activity
sttp The Scala HTTP client you always wanted! GitHub stars GitHub commit activity
tapir Declarative, type-safe web endpoints library GitHub stars GitHub commit activity
endpoints4s (猸377) Describe HTTP endpoints in Scala and derive clients, servers, and documentation GitHub stars GitHub commit activity
frontier (猸8) Fast, efficient, pure-functional, effect-free websocket, http and udp server, http client and telegram bot GitHub stars GitHub commit activity

Semantic Web

Scala libraries for interactions with the Web of Data, and other RDF tools.

Name Description GitHub Activity
banana-rdf (猸286) Banana RDF GitHub stars GitHub commit activity
scowl (猸50) A Scala DSL for programming with the OWL API. GitHub stars GitHub commit activity

Metrics and Monitoring

Scala libraries for gathering metrics and monitoring applications.

Name Description GitHub Activity
metrics-scala (猸422) The scala API for Dropwizard's Metrics. GitHub stars GitHub commit activity

Parsing

Scala libraries for creating parsers.

Name Description GitHub Activity
atto (猸355) friendly little parsers GitHub stars GitHub commit activity
fastparse Writing Fast Parsers Fast in Scala GitHub stars GitHub commit activity
parboiled2 A macro-based PEG parser generator for Scala 2.10+ GitHub stars GitHub commit activity
scala-parser-combinators simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module GitHub stars GitHub commit activity
cats-parse (猸197) A parsing library for the cats ecosystem GitHub stars GitHub commit activity
scallion (猸47) LL(1) parser combinators in Scala GitHub stars GitHub commit activity

Sbt plugins

Sbt plugins to make your life easier.

Name Description GitHub Activity
better-monadic-for Desugaring scala for without implicit withFilters GitHub stars GitHub commit activity
coursier Pure Scala Artifact Fetching GitHub stars GitHub commit activity
mdoc (猸346) Typechecked markdown documentation for Scala GitHub stars GitHub commit activity
sbt-api-mappings (猸84) An Sbt plugin that fills apiMappings for common Scala libraries. GitHub stars GitHub commit activity
sbt-apidoc (猸2) A port of apidocjs https://apidocjs.com to sbt, to document REST Api GitHub stars GitHub commit activity
sbt-assembly Deploy 眉ber-JARs. Restart processes. (port of codahale/assembly-sbt) GitHub stars GitHub commit activity
sbt-buildinfo I know this because build.sbt knows this. GitHub stars GitHub commit activity
sbt-ci-release (猸243) sbt plugin to automate Sonatype releases from GitHub Actions GitHub stars GitHub commit activity
sbt-dependency-check (猸234) SBT Plugin for OWASP DependencyCheck. Monitor your dependencies and report if there are any publicly known vulnerabilities (e.g. CVEs). 馃寛 GitHub stars GitHub commit activity
sbt-docker Create Docker images directly from sbt GitHub stars GitHub commit activity
sbt-doctest (猸178) Doctest for scala GitHub stars GitHub commit activity
sbt-ghpages (猸94) git, site and ghpages support for sbt projects. GitHub stars GitHub commit activity
sbt-groll (猸134) sbt plugin to roll the Git history GitHub stars GitHub commit activity
sbt-header (猸186) sbt-header is an sbt plugin for creating file headers, e.g. copyright headers GitHub stars GitHub commit activity
sbt-hepek (猸19) Sbt plugin for rendering Scala objects to files. And more! GitHub stars GitHub commit activity
sbt-ide-settings (猸55) SBT plugin for tweaking various IDE settings GitHub stars GitHub commit activity
sbt-jmh "Trust no one, bench everything." - sbt plugin for JMH (Java Microbenchmark Harness) GitHub stars GitHub commit activity
sbt-microsites (猸310) An sbt plugin to create awesome microsites for your project GitHub stars GitHub commit activity
mima (猸412) A tool for catching binary incompatibility in Scala GitHub stars GitHub commit activity
sbt-native-packager sbt Native Packager GitHub stars GitHub commit activity
sbt-pack (猸466) A sbt plugin for creating distributable Scala packages. GitHub stars GitHub commit activity
sbt-pgp (猸136) PGP plugin for sbt GitHub stars GitHub commit activity
sbt-release A release plugin for sbt GitHub stars GitHub commit activity
sbt-revolver An SBT plugin for dangerously fast development turnaround in Scala GitHub stars GitHub commit activity
sbt-scala-js-map (猸34) A Sbt plugin that configures source mapping for Scala.js projects hosted on Github GitHub stars GitHub commit activity
sbt-scalafmt (猸141) sbt plugin for Scalafmt GitHub stars GitHub commit activity
sbt-scoverage sbt plugin for scoverage GitHub stars GitHub commit activity
sbt-site (猸173) Site generation for sbt GitHub stars GitHub commit activity
sbt-sonatype (猸296) A sbt plugin for publishing Scala/Java projects to the Maven central. GitHub stars GitHub commit activity
sbt-unidoc (猸120) sbt plugin to create a unified Scaladoc or Javadoc API document across multiple subprojects. GitHub stars GitHub commit activity
sbt-updates sbt plugin that can check Maven and Ivy repositories for dependency updates GitHub stars GitHub commit activity
sbt-eclipse Plugin for sbt to create Eclipse project definitions GitHub stars GitHub commit activity
scala-clippy (猸314) Good advice for Scala compiler errors GitHub stars GitHub commit activity
splain (猸369) better implicit errors for scala GitHub stars GitHub commit activity
tut doc/tutorial generator for scala GitHub stars GitHub commit activity
xsbt-web-plugin (猸384) Servlet support for sbt GitHub stars GitHub commit activity
sbt-deploy-ssh (猸27) SBT deploy plugin GitHub stars GitHub commit activity
sbt-git (猸334) A git plugin for SBT GitHub stars GitHub commit activity
sbt-git (猸1) Use git-describe as a version and run git commands inside SBT shell GitHub stars GitHub commit activity

XML / HTML

XML and HTML generation and processing

Name Description GitHub Activity
scala-scraper A Scala library for scraping content from HTML pages GitHub stars GitHub commit activity
xs4s (猸56) XML Streaming for Scala including FS2/cats support GitHub stars GitHub commit activity

Markdown

Name Description GitHub Activity
Laika (猸344) Text Markup Transformer for sbt and Scala applications, transforming Markdown and reStructuredText to HTML, EPUB and PDF GitHub stars GitHub commit activity

JavaScript

JavaScript generation and interop libraries.

Name Description GitHub Activity
scalafiddle-editor (猸96) Web user interface for ScalaFiddle GitHub stars GitHub commit activity
scala-js Scala.js, the Scala to JavaScript compiler GitHub stars GitHub commit activity

Scheduling

Name Description GitHub Activity
akka-quartz-scheduler Quartz Extension and utilities for cron-style scheduling in Akka GitHub stars GitHub commit activity

Templating

Web templating engines.

Name Description GitHub Activity
beard (猸123) A lightweight, logicless templating engine, written in Scala and inspired by Mustache GitHub stars GitHub commit activity
scalatags ScalaTags is a small XML/HTML construction library for Scala. GitHub stars GitHub commit activity
scalate Scalate is a Scala based template engine which supports HAML, Mustache and JSP, Erb and Velocity style syntaxes. GitHub stars GitHub commit activity
twirl Twirl is Play's default template engine GitHub stars GitHub commit activity
hepek (猸88) Typesafe HTML templates in pure Scala. Static site generator included! Play and ScalaJS support! GitHub stars GitHub commit activity

Tools

Name Description GitHub Activity
scala-trace-debug (猸114) Macro based print debugging. Locates log statements in your IDE. GitHub stars GitHub commit activity
bloop Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool. GitHub stars GitHub commit activity
codacy-scalameta (猸35) Codacy tool for Scalameta GitHub stars GitHub commit activity
coursier Pure Scala Artifact Fetching GitHub stars GitHub commit activity
dregex (猸37) Dregex is a JVM library that implements a regular expression engine using deterministic finite automata (DFA). It supports some Perl-style features and yet retains linear matching time, and also offers set operations. GitHub stars GitHub commit activity
fast-string-interpolator (猸79) Scala macro that generates ultra-fast string interpolators. GitHub stars GitHub commit activity
fastring (猸123) Extremely fast string formatting GitHub stars GitHub commit activity
gitbucket A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility GitHub stars GitHub commit activity
giter8 a command line tool to apply templates defined on GitHub GitHub stars GitHub commit activity
metals Scala language server with rich IDE features 馃殌 GitHub stars GitHub commit activity
mill Your shiny new Java/Scala build tool! GitHub stars GitHub commit activity
pos (猸23) Macro based print debugging. Locates debug statements in your IDE. Supports logging. GitHub stars GitHub commit activity
sbt sbt, the interactive build tool GitHub stars GitHub commit activity
scalafix Refactoring and linting tool for Scala GitHub stars GitHub commit activity
Scalafmt Code formatter for Scala
scalariform Scala source code formatter GitHub stars GitHub commit activity
scalastyle scalastyle GitHub stars GitHub commit activity
Scalatex (猸289) Programmable, Typesafe Document Generation GitHub stars GitHub commit activity
scapegoat (猸469) Scala compiler plugin for static code analysis GitHub stars GitHub commit activity
wartremover Flexible Scala code linting tool GitHub stars GitHub commit activity
stone (猸4) URL (de)construct. Withers. GitHub stars GitHub commit activity
scalajs-router (猸4) ScalaJS frontend router GitHub stars GitHub commit activity
scala2plantuml (猸20) Scala2PlantUML generates PlantUML diagrams from Scala code. GitHub stars GitHub commit activity

Geospatial

Libraries to aid with geospatial calculations and artifacts.

Name Description GitHub Activity
geotrellis GeoTrellis is a geographic data processing engine for high performance applications. GitHub stars GitHub commit activity
osm4scala (猸62) Scala and Spark library focused on reading OpenStreetMap Pbf files. GitHub stars GitHub commit activity
rtree2d (猸120) RTree2D is a 2D immutable R-tree for ultra-fast nearest and intersection queries in plane and spherical coordinates GitHub stars GitHub commit activity
sfcurve (猸75) LocationTech SFCurve is a Scala library for the creation, transformation, and querying of space-filling curves GitHub stars GitHub commit activity
stac4s (猸14) a scala library with primitives to build applications using the SpatioTemporal Asset Catalogs specification GitHub stars GitHub commit activity
franklin (猸64) A STAC/OGC API Features Web Service GitHub stars GitHub commit activity

Devops

DevOps related tools and libraries.

Name Description GitHub Activity
skuber (猸62) A Scala Kubernetes client library GitHub stars GitHub commit activity

Learning Scala

Nice books, blogs and other resources to learn Scala

Books

Exercises

Tutorials and courses

Commercial courses

Community Members' Blogs

Company Blogs

Podcasts

Communities

Misc.