Arduino and PlatformIO IDE compatible TFT library
Midbar is more than just an open source password vault!
Experimental, arduino-compatible, multi-master, multi-media network
ESP8266 framework for Homie, a lightweight MQTT convention
MySensors library and examples
A Java VM for ARDUINO and other micros using the leJOS runtime.
The serial LCD module using ATmega8 along with easy arduino library.
A small Hammondclone on console