Alpha Tab
alphaTab is a cross platform music notation and guitar tablature rendering library.
Vexflow
A JavaScript library for rendering music notation and guitar tablature.
Midi Writer Js
♬ JavaScript library providing an API for programmatically generating expressive multi-track MIDI files in browser and Node.
Teoria
A JavaScript music theory framework.
Web Audio Api
The Web Audio API, developed by the W3C Audio WG
Mp3.js
A JavaScript MP3 decoder for Aurora.js
Speak.js
Text-to-Speech in JavaScript using eSpeak
Pizzicato
Library to simplify the way you create and manipulate sounds with the Web Audio API.
Jsmediatags
Media Tags Reader (ID3, MP4, FLAC)
Howler.js
Javascript audio library for the modern web.
Sound JS
A Javascript library for working with Audio. Features a simple interface as the front end to multiple audio APIs via a plugin model. Currently supports HTML5 Audio & Flash.
Wad
Web Audio DAW. Use the HTML5 Web Audio API for dynamic sound synthesis. It's like jQuery for your ears.
Waud
Web Audio Library
Pedalboard.js
Open source JavaScript framework for developing audio effects for guitars using the Web Audio API.
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.
Flac.js
FLAC decoder in JavaScript
Audiolet
A JavaScript library for real-time audio synthesis and composition from within the browser