Letter: M
- mcontrol - MIDI controller message router
- meterbridge - Software meterbridge for Jack
- midisport-firmware - Firmware for MidiSport devices
- miniaudicle - Light weight ChucK development environment
- mirra - 2D interaction focused OpenGL graphics library
- mixxx - DJ software emulating an analog mixer with two playback devices
- muse - Midi/Audio Music Sequencer