Mixxx is Free DJ software that gives you everything you need
R Package for Music Score and Audio Generation
wxMEdit, Cross-platform Text/Hex Editor, Improved Version of MadEdit
The Java Multitrack Audio Recording Software AudioChain
music composition and notation software, audio to midi converter
Perform dynamic tunings for realtime music.
The Java Musical Framework
Real-time audio synthesis engine and music programming language
Représentation des modes musicaux
patch editor for the E-MU Proteus 2000 synthesizer family
Package to allow the use of notational elements in LaTeX documents
Java API for Musical Softwre
Open-Source Braille Music Notation Software
Programmable Digital Synthesizer