Font files available from Google Fonts, and a public issue tracker for all things Google Fonts

A javascript binary tree based algorithm for 2d bin-packing suitable for generating CSS sprites. This fork adds a max size for growing packer

Spatial Audio Rendering on the web.

Ecosystem for building educational, accessible HTML5 games

2D tile based game framework in HTML5

JavaScript client for the Leap Motion Controller

The Easel Javascript library provides a full, hierarchical display list, a core interaction model, and helper classes to make working with the HTML5 Canvas element much easier.

A simple but powerful tweening / animation library for Javascript. Part of the CreateJS suite of libraries.

PreloadJS makes preloading assets & getting aggregate progress events easier in JavaScript. It uses XHR2 when available, and falls back to tag-based loading when not.

A Javascript library for working with Audio. It provides a consistent API for loading and playing audio on different browsers and devices. Currently supports WebAudio, HTML5 Audio, Cordova / PhoneG…

cross-platform ChildBrowser plugin for PhoneGap/Cordova