QMK (*Quantum Mechanical Keyboard*) is an open source community centered around developing computer input devices. Early on the community was keyboard focused, but has now grown to include mice and MIDI devices as well. The community maintains [QMK Firmware](https://github.com/qmk/qmk_firmware), [QMK Configurator](https://config.qmk.fm), [QMK Toolbox](https://github.com/qmk/qmk_toolbox), [qmk.fm](https://qmk.fm), and this documentation.
QMK has lots of [features](features.md) to explore, and a good deal of reference documentation to dig through. Most features are taken advantage of by modifying your [keymap](keymap.md), and changing the [keycodes](keycodes.md).