Atmel AVR

QMK should run on any Atmel AVR processor with enough Flash. It has been tested on the following:

ATmega32U4 (PJRC Teensy 2.0)
AT90USB1286 (PJRC Teensy++ 2.0)
AT90USB1287 (Atmel USBKEY)
ATmega168P with using V-USB
ATmega328P with using V-USB
ATmega32U2
AT90USB1286, 646, 647 should work
AT90USB162 testing...

NOTE: To enable full features of firmware you'll need 32KB flash size.

Please add any tested microcontrollers to this list.

ARM

You can also use any ARM processor that ChibiOS supports. The following processors have been tested: