audio sequencer
Easily apply cool gnarly voice filters to your audio files
A Web Audio framework for making interactive music in the browser
DSSI is an audio plugin API for soft synths and effects.
Free open source DAW, MIDI sequencer, software synthesizers
Continuous choice of string resonance at each point live music in CPU
Free and Open Source Brainwave Entrainment application
Synthesizer, mixing, sound effects, music composition and production.
free cross-platform music creation software
ZynAddSubFx and Yoshimi midi control
Flash ActionScript3 dynamic audio library
Simple musical track editor + Tools