Open-source music library management system
LilyPond sheet music text editor
Trying to be a robust, user-friendly and hackable music player
Mixxx is Free DJ software that gives you everything you need
Audio Editor
Free professional video converter Windows|Mac|Linux
A MIDI Network Gateway via UDP/IP Multicast
MIDI monitor for Linux
A MIDI Remote Controller via UDP/IP Multicast
The Ultimate Audio Recording Studio for Linux
Simple SoundFont MIDI player.
BASH tools and and Debian packages for Linux users and administrators
Additional Tagging Tools plugin for MusicBee
slab3d is a real-time virtual acoustic environment.
Various tools for musicians.
Audio Transcription software for Linux (Vlc) with a foot pedal
Java Audio Plugin System