ESP32 - ESP32-based boards ESP8266 - ESP8266-based boards Intel Curie - Arduino 101 SparkFun Apollo3 - Sparkfun Artemis Redboard ST Microelectronics STM32 (official core) - STM32 Nucleo, Discovery, ...

Alternative Firmware for 'ESP8266, ESP8285 and ESP32 based devices' like Itead Sonoff, Shelly or NodeMCU, with Web, Timers, OTA, MQTT, KNX, Rules and Sensors' Support, to be used on Smart Home Systems ...