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...
Paul's Extreme Sound Stretch : This is a program for stretching the audio. It is suitable only for extreme sound stretching of the audio (like 50x) and for applying special effects ...
Essentia : Open-source library and tools for audio and music analysis, description and synthesis
meSpeak.js : meSpeak.js (modulary enhanced speak.js) is a 100% client-side JavaScript text-to-speech library
howler.js : howler.js is an audio library for the modern web. It defaults to Web Audio API and falls back to HTML5 Audio. This makes working with audio in JavaScr...
Feedforward : An experimental terminal editor for TidalCycles.
ixi software : ixi audio is an experimental project concerned with the creation of digital musical instruments and environments for generative music.
SoundCloud : SoundCloud lets you move music fast & easy. The platform takes the daily hassle out of receiving, sending & distributing music for artists, record lab...
Sonerezh : A self-hosted, web-based application for stream your music, everywhere.
https://spag.cc/ : File upload and sound recording for livecoding sessions
sonicsquirrel.net is a platform dedicated to netlabels and netaudio.
All music you find here is released under open licenses (mainly Creative Commons).