Cecilia : Cecilia is an audio signal processing environment aimed at sound designers. Cecilia mangles sound in ways unheard of. Cecilia lets you create your own...
ixi software : ixi audio is an experimental project concerned with the creation of digital musical instruments and environments for generative music.
Puredyne : Puredyne is the USB-bootable GNU/Linux operating system for creative multimedia.
librosa : librosa is a python package for music and audio analysis. It provides the building blocks necessary to create music information retrieval systems.
sfxr : A tool to quickly generate 8bit/16 bit-soud effects!
VST Plugins Free - Virtual instruments and effects
