:octopus: Superpowers — Extensible HTML5 app for real-time collaborative projects
phina.js is game library
Frozen is an open-source HTML5 game engine delivering ease-of-use, rapid development through tooling and modularity.
html5 game engine optimized for rapid development
Framework for HTML5 Canvas oriented 2D video games
Panda.js HTML5 game engine
HTML5 game framework for web and iOS
a 2D rigid body physics engine for the web
Egret is a brand new open mobile game and application engine which allows you to quickly build mobile games and apps on Android,iOS and Windows.