jsfx : This is a javascript library (with frontend) for sound effect generation.
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...
Overtone : Overtone is an open source audio environment designed to explore new musical ideas from synthesis and sampling to instrument building, live-coding and...
Wave.js : Audio visualizer library for javascript. Create dynamic animations that react to an audio file or audio stream.
sfxr : A tool to quickly generate 8bit/16 bit-soud effects!