Gibberish is different from other JavaScript audio libraries (such as audiolib.js or Audiolet) in that it is heavily optimized for JIT compilation and per-sample processing. Per-sample processing means code is less efficient, but it enables you do to complex signal-processing (such as sample-accurate audio-rate modulation of scheduling and feedback networks) that isn't possible using buffer-based processing. The code that is generated is arguably not human-readable, hence the name Gibberish.

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 audio programmers looking to create web-based audio applications. On the high-level, Tone offers common DAW (digital audio workstation) features like a global transport for scheduling and timing events and prebuilt synths and effects.

Timbre.js provides a functional processing and synthesizing audio in your web apps with modern JavaScript's way like jQuery or node.js. It has many T-Object (formally: Timbre Object) that connected together to define the graph-based routing for overall audio rendering. It is a goal of this project to approach the next generation audio processing for web.

MIDI.js ties together, and builds upon frameworks that bring MIDI to the browser. Combine it with jasmid to create a web-radio MIDI stream similar to this demo, or with Three.js, Sparks.js, or GLSL to create Audio/visual experiments. Piano/guitar simulations, Drum machines, and all kinds of certified funkitude is within your grasps!

Wad is a Javascript library for manipulating audio using the new HTML5 Web Audio API. It greatly simplifies the process of creating, playing, and manipulating audio, either for real-time playback, or at scheduled intervals. Wad provides a simple interface to use many features one would find in a desktop DAW (digital audio workstation), but doesn't require the user to worry about sending XHR requests or setting up complex audio graphs.

Flocking is a JavaScript audio synthesis framework designed for artists and musicians who are building creative and experimental Web-based sound projects. It runs in Firefox, Chrome, Safari, and Node.js on Mac OS X, Windows, Linux, iOS, and Android.