Firmware

• Sming Framework (⭐1.3k) - Superb C/C++ IoT Framework with support for ESP8266 and ESP32.

Tools

• NodeMCU Flasher (⭐1.8k) - The official flashing tool for the NodeMCU OS.

Projects / Smart Home and IoT

• ESPEasy (⭐2.8k) - Easily turn ESP modules into multifunction sensor devices for home automation systems.

• DoorsignEPD (⭐94) - A smart doorsign with an E-Paper display using the ESP32.

• HomePoint (⭐533) - Control MQTT/HomeKit smart home devices from an ESP32-powered screen.

• openHASP - Control your home automation devices from a customizable touchscreen UI connected via MQTT.

Projects / LoRa

• ESP32-Paxcounter (⭐1.1k) - Wifi & Bluetooth driven, LoRaWAN enabled, battery powered mini Paxcounter built on cheap ESP32 LoRa IoT boards.

• Disaster Radio - A disaster-resilient communications network powered by the sun.

Projects / Music and Audio

• Alles (⭐113) - A many speaker distributed music synthesizer using UDP multicast over WiFi, modeled after the alles machine/AMY.

• ESP32-Radio (⭐839) - Internet radio based on ESP32, VS1053 and a TFT screen.

• ESPuino (⭐170) - RFID-controlled music player powered by ESP32.

• Knobby (⭐112) - A handheld Spotify remote that encourages you to explore unfamiliar music.

• PedalinoMini (⭐294) - A wireless MIDI pedal controller for guitarists, built with the ESP32.

• Squeezelite-esp32 (⭐413) - Streaming audio receiver with multi-room sync, AirPlay, Bluetooth, hardware buttons, display and more.

• ThingPulse esp8266-spotify-remote (⭐213) - Control your Spotify player from a ESP8266 with color touch display.

Projects / Smartwatches

• mutantW_V1 - An ESP32 based open source smartwatch with 1.7 inch display, WiFi, Bluetooth, NeoPixel and vibration.

• StickWatch (⭐73) - A smartwatch module based on the M5Stick, using the ESP32.

• Watchy - An open source e-paper watch with lots of options for customization.

Projects / Others

• E-TKT (⭐287) - An ESP32 powered DIY label maker that mixes both old fashioned and contemporary technology.

• FreeTouchDeck (⭐476) - Open source touch macropad and stream control deck with built-in web configurator.

• SmartSpin2k (⭐87) - Transform your spin bike into a smart trainer with automatic resistance knob control in fitness apps like Zwift.

• WirelessPrinting (⭐303) - Print wirelessly from Cura, PrusaSlicer or Slic3r to your 3D printer connected to an ESP module.

• WLED - Control many types of RGB(W) LED strips with an ESP8266 or ESP32 over WiFi.

Libraries / Others

• LVGL - An open-source graphics library providing everything you need to create embedded GUIs with easy-to-use graphical elements, beautiful visual effects and low memory footprint.

• ESP32-audioI2S (⭐549) - Plays mp3, m4a and wav files from SD card or stream via I2S interface.

• HomeSpan (⭐627) - A robust and extremely easy-to-use Arduino library for creating your own ESP32-based HomeKit devices.

Libraries / Others

• LedFx (⭐706) - A library for using audio input to create realtime light shows. LedFx can control multiple devices and works great with cheap ESP8266 nodes.

Firmware

• ESP3D (⭐1.4k) - An experimental firmware for 3D Printers, both the ESP32 and 8266.

Tools

• Tuya-Convert (⭐3.8k) - A Wi-Fi firmware flasher ESP8266 that has been pre-loaded with Tuya firmware.

• Tasmotizer (⭐1.1k) - A graphical flashing tool for Tasmota firmware. Can manage Wi-Fi & MQTT settings, modules & templates.

Projects / Smart Home and IoT

• Tasmota - An alternative firmware for Sonoff & other ESP8266/ESP32 devices. Includes a large collection of sensor drivers & integrates with Home Assistant natively or via MQTT.

Projects / Smartwatches

• Open SmartWatch - A FOSS smartwatch with GPS, an inertial unit and an extremely cool 3D-printed case.

Libraries / Others

• Dhyara (⭐11) - A C/C++ library for making a Mobile Ad hoc Network (MANET) using ESP Now.

Projects / LoRa

• Meshtastic - ESP32 LoRA boards as secure, long battery life, mesh GPS communicators.

Libraries / Others

• CanAirIO SensorLib (⭐25) - ESP32/8266 library with auto-configuration of multiple PM2.5, CO2 and environment sensors.

Projects / Smart Home and IoT

• CanAirIO (⭐81) - Citizen science project that uses mobile and fixed stations to measure air quality with ESP32 and smartphones.

Libraries / Others

• go-mcu (⭐11) - Golang package for interacting with NodeMCU-based boards.

Firmware

• MicroPython (⭐15k) - An implemention of Python3 for the ESP8266 and 32.

Libraries / Others

• painlessMesh (⭐464) - A library that takes care of the particulars of creating a simple mesh network using ESP8266 and ESP32 hardware.

• WifiEspNow (⭐165) - Arduino library for ESP-NOW, a connectionless WiFi communication protocol defined by Espressif.

Projects / InfoSec

• ESP32Marauder (⭐972) - An integrated suite of offensive and defensive tools for WiFi and Bluetooth.

Firmware

• MongooseOS (⭐2.3k) - An IoT specific firmware, with both C and JS. Available for the ESP32/8266.

Tools

• ESPTool-ck (⭐353) - A CLI tool for flashing in the ESP8266.

• ESPTool-gui (⭐134) - A flashing GUI tool based on ESPTool-ck.

• LuaNode (⭐865) - A lua-only SDK for 32/8266.

Projects / Smart Home and IoT

• OpenMQTTGateway (⭐2.7k) - An implementation of a multiprotocol MQTT gateway for both ESP's among other devices.

• ESPHome - A full-featured system for controlling ESP's through simple yet powerful configuration files and Home Automation systems.

• Sonoff-Homekit (⭐908) - An alternative firmware for Sonoff devices (and other 8266 devices) which allows control through Apple's Homekit.

• EPaperWeatherDisplay (⭐112) - A very cute e-ink weather display using the ESP32.

• SuperGreenOS (⭐90) - A full-featured home farming automation software for the ESP32.

Projects / InfoSec

• ESP32-BLECollector (⭐198) - A wardriving device which displays BLE devices and collects data from them, all in a nice screen interface.

• ArduinoPcap (⭐343) - A library which allows generation of .pcap files with network traffic, for both ESP's.

• WiFi Satellite - A giant Wifi "satellite" that can monitor all 14 2.4Ghz channels using, well, 14 ESP32s.

• ESP8266 Deauther (⭐11k) - A very cool pseudojammer (deauther) of Wifi networks that uses the ESP8266.

• PacketMonitor (⭐281) - A beautiful OLED monitor for packet activity in a WiFi channel. Two versions for each ESP.

• WiFiDuck (⭐1.5k) - A wireless-enabled keystroke injector, analogous, but even more awesome than the Rubber Ducky.

• ESP8266 Beacon Spam (⭐771) - Want to confuse people? This device creates hundreds of fake WiFi networks.

• DeauthDetector (⭐565) - A small device that shines a light if it detects a WiFi deauth attack. Made by the same guy as the last six projects.

Projects / Biomedical

• HeartyPatch - A wearable BLE and WiFi connected ECG-HR patch which uses the ESP32.

• HealthyPi v4 - An amazing open source vital signs monitor that can monitor ECG, respiration, pulse oximetry and body temperature, all run by an ESP32.

Projects / Others

• SoftRF (⭐509) - A DIY aviation proximity awareness system that can be used in UAV projects.

• Retro ESP32 (⭐461) - An extremely cool launcher for the Odroid Go (with the ESP32), which allows emulating several retro consoles.

• DroneBridge (⭐161) - An implementation of DroneBridge, a signal link for drones and UAV's on the ESP32.

Libraries / Others

• Wasm3 (⭐5.4k) - A lightning fast WebAssembly interpreter designed for embedded devices, compatible with both ESP's.

• ESP-Dash (⭐724) - Beautiful and fast framework for creating remote dashboards in the 8266/32. No internet required.

• GUIslice (⭐823) - A drag and drop GUI framework for several devices and screen controllers. Compatible with 8266 and 32.

• MicroWebSrv2 (⭐483) - A very powerful MicroPython web server which can be used in the ESP32.

• TTS (⭐145) - A somehow good text to speech library for several Arduino devices, both ESP's included.

• Koyn (⭐63) - A decentralized Bitcoin library for the ESP32 and the ESP8266.

• UTFT-ESP (⭐89) - UTFT Support for the ESP32/8266.

• TinyGSM (⭐1.5k) - A quick and simple Arduino library for interaction with GSM modules which can also control the 8266 through AT commands.

• mJS (⭐1.7k) - A lightweight and restricted JS engine that is used by MongooseOS, compatible on the 32 and 8266.

• ESPUI (⭐525) - A simply library for making interactive web interfaces for both ESP's.

• ESP32 ePaper (⭐184) - A full-featured library for using ePaper modules with the ESP32.

• TinyUPnP (⭐84) - A lightweight UPnP IGD library for automatic port forwarding on the 8266 and 32.

• Esp32SSHClient (⭐30) - A library that implements a SSH client in the ESP32.

Firmware

• ESPBasic - A BASIC firmware for easy and wireless programming, ready for the 8266.

Libraries / Others

• ESP8266Wifi (⭐437) - Simple Arduino Wifi library for the 8266.

Firmware

• NodeMCU (⭐7.2k) - An eLua-based firmware for the ESP8266.

• RT-Thread (⭐7.5k) - Chinese open source firmware available for the ESP32.

Tools

• PlatformIO (⭐6.2k) - Cross Platform IDE and Debugger that supports both the ESP32 and ESP8266.

Libraries / Others

• Homie8266 (⭐1.3k) - Framework implementation of the Homie protocol for the 8266.

• ESP_mqtt (⭐1.1k) - MQTT helper library for the ESP8266.

• IRremoteESP8266 (⭐2.3k) - Emit and receive IR signals in the ESP8266.

• esphomelib (⭐544) - Framework to integrate with HomeAssistant in the 8266.

• Free802.11 (⭐415) - Library to emit arbitrary 802.11 signals with the ESP32.

• TFTLibrary (⭐486) - TFT compatibility for the ESP32.

• ESPAudio (⭐1.5k) - Library for playing a diverse range of audio formats in the ESP8266/ESP32.

• AsyncTCP (⭐652) - Asynchronous TCP Library for both the 8266 and the 32.

• ESP-HomeKit (⭐963) - Homekit implementation for 8266 on RTOS.

• ESPHelper (⭐321) - MQTT and Wi-fi automation-oriented library for the 8266.

• ESPHelper/32 (⭐54) - Port of the ESPHelper library for the 32.

• WiFiESP (⭐492) - Arduino library for Wifi management, client/server for 8266 board.

Firmware

• Espressif AT - The default vanilla firmware for the ESP8266.

• Frankenstein (⭐315) - A quick and dirty firmware with cool features for the ESP8266.

• DeviceHive - A firmware made as a client for DeviceHive's IoT data platform, only for the 8266.

Tools

• ESP Flash Tool - The vanilla firmware flasher for both ESP's.

• Arduino Core/8266 (⭐14k) - The Arduino core for the ESP8266.

• Arduino Core/32 (⭐9.5k) - The other Arduino core for the ESP32.

• ESPTool (⭐4.5k) - Espressif's command line tool for bootloader comms in both ESP's.

• ESP-Open-SDK (⭐1.9k) - An open SDK for the ESP8266.

• Arduino FS Plugin (⭐645) - An Arduino plugin for filesystem uploads in the 8266.