Tone.js : Tone.js is a Web Audio framework for creating interactive music in the browser. The architecture of Tone.js aims to be familiar to both musicians and ...
meSing.js : meSing.js is a JavaScript singing synthesis library that uses the Web Audio API's DSP capabilities in conjunction with the meSpeak.js speech synthesis...
Glicol : make music with code. connect different nodes like a synth, sequencer or sampler.
ixi software : ixi audio is an experimental project concerned with the creation of digital musical instruments and environments for generative music.
Essentia : Open-source library and tools for audio and music analysis, description and synthesis
A synthesizer built with Vue.js and C++ (compiled to WebAssembly).
The UI is inspired by Ableton Playground.