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...
JSHint : This is JSHint, a tool that helps to detect errors and potential problems in your JavaScript code.
Wave.js : Audio visualizer library for javascript. Create dynamic animations that react to an audio file or audio stream.