Alpha Tab
alphaTab is a cross platform music notation and guitar tablature rendering library.
Tone.js
A Web Audio framework for making interactive music in the browser.
Web Audio Api
The Web Audio API, developed by the W3C Audio WG
Wavesurfer.js
Navigable waveform built on Web Audio and Canvas
Pizzicato
Library to simplify the way you create and manipulate sounds with the Web Audio API.
Midi Writer Js
♬ JavaScript library providing an API for programmatically generating expressive multi-track MIDI files in browser and Node.
Jsmediatags
Media Tags Reader (ID3, MP4, FLAC)
Flac.js
FLAC decoder in JavaScript
Teoria
A JavaScript music theory framework.
Midi.js
Making life easy to create a MIDI-app on the web. Includes a library to program synesthesia into your app for memory recognition or for creating trippy effects. Convert soundfonts for Guitar, Bass, Drums, ect. into code that can be read by the browser. Supports multiple simultaneous instruments and perfect timing.
Vexflow
A JavaScript library for rendering music notation and guitar tablature.
Speak.js
Text-to-Speech in JavaScript using eSpeak
Wad
Web Audio DAW. Use the HTML5 Web Audio API for dynamic sound synthesis. It's like jQuery for your ears.
Tuna
An audio effects library for Web Audio, made by www.dinahmoe.com
Amplitudejs
A Javascript library that allows you to control the design of your media controls in your webpage -- not the browser. No dependencies (jQuery not required)
Mp3.js
A JavaScript MP3 decoder for Aurora.js
Audio.js
A cross-browser javascript wrapper for the html5 audio tag