QMK

QMK (Quantum Mechanical Keyboard) is an open source community centered around developing computer input devices. The community encompasses all sorts of input devices, such as keyboards, mice, and MIDI devices. This is a keyboard firmware based on the tmk_keyboard firmware with some useful features for Atmel AVR and ARM controllers, and more specifically, the OLKB product line, the ErgoDox EZ keyboard, and the Clueboard product line. Keyboards powered by QMK are Planck, Preonic, ErgoDox EZ, Clueboard, Cluepad, Gergo, Georgi, and Atreus. QMK is compatible with lots of other community-supported keyboards and projects. QMK is developed and maintained by Jack Humbert of OLKB with contributions from the community, and of course, Hasu.