Alternative firmware for ESP8266 with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at

Affordable WiFi hacking platform for testing and learning

Lua based interactive firmware for ESP8266, ESP8285 and ESP32

📟 JSON library for Arduino and embedded C++. Simple and efficient.

PlatformIO is a professional collaborative platform for embedded development 👽 A place where Developers and Teams have true Freedom! No more vendor lock-in!

ESP8266 WiFi Connection manager with web captive portal

A full functional WiFi Repeater (correctly: a WiFi NAT Router)

Blynk library for embedded hardware. Works with Arduino, ESP8266, Raspberry Pi, Intel Edison/Galileo, LinkIt ONE, Particle Core/Photon, Energia, ARM mbed, etc.

🚀 The fastest WebAssembly interpreter (and the most universal wasm runtime)

With PJON you build networks of devices for free with no need of a cloud service or a centralised platform you don’t fully control.

Home automation firmware for ESP8266-based devices

ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems.

Mongoose OS - an IoT Firmware Development Framework. Supported microcontrollers: ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, STM32F7. Amazon AWS IoT, Microsoft Azure, Google IoT Core integrated. Code in C or JavaScript.

A collection of scripts to flash Tuya IoT devices to alternative firmwares

esp8266 wifi-serial bridge, outbound TCP, and arduino/AVR/LPC/NXP programmer

Blynk is an Internet of Things Platform aimed to simplify building mobile and web applications for the Internet of Things. Easily connect 400+ hardware models like Arduino, ESP8266, ESP32, Raspberry Pi and similar MCUs and drag-n-drop IOT mobile apps for iOS and Android in 5 minutes

Free and open (as much as possible) integrated SDK for ESP8266/ESP8285 chips

MQTT gateway for ESP8266, ESP32, Sonoff RF Bridge or Arduino with bidirectional 433mhz/315mhz/868mhz, Infrared communications, BLE, beacons detection, mi flora / mi jia / LYWSD02/ Mi Scale compatibility, SMS & LORA.

🎵 🌈 Real-time LED strip music visualization using Python and the ESP8266 or Raspberry Pi

Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/

Embedded JavaScript engine for C/C++

Driver for the SSD1306 and SH1106 based 128x64, 128x32, 64x48 pixel OLED display running on ESP8266/ESP32

💡 ESP8266 framework for Homie, a lightweight MQTT convention for the IoT

Sming - Open Source framework for high efficiency native ESP8266 development

arduinoWebSockets

MySensors library and examples

MQTT client library for ESP8266

A small Arduino library for GSM modules, that just works

WS2812 FX Library for Arduino and ESP8266

Upload, save and run keystroke injection payloads with an ESP8266 + ATMEGA32U4