An open source and free music notation software
Mixxx is Free DJ software that gives you everything you need
Pattern language
RPG Maker 2000/2003 and EasyRPG games interpreter
Music score editor
Free music notation & composition software
MIDI software to play tones from the "overtone series"
Your Hardcore Loop Machine for Windows, Linux and OS X.
A virtual MIDI keyboard and a piano for Windows.
Real-time audio synthesis engine and music programming language
patch editor for the E-MU Proteus 2000 synthesizer family
free cross-platform music creation software
MIDI and/or Custom WAV Metronome for Windows and Windows Mobile
Speedy Composer – Artificial Neural Network Melody Composer.