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.
Panda.js HTML5 game engine
A virtual joystick for touch capable interfaces.
Super fast HTML 5 2D rendering engine that uses webGL with canvas fallback
:octopus: Superpowers — Extensible HTML5 app for real-time collaborative projects
html5 game engine optimized for rapid development
a 2D rigid body physics engine for the web
Lightweight, fast, interactable 2D HTML5 rendering engine for cross-platform game development.
GameJs is a thin library on top of the HTML canvas element. In addition to the drawing functions it has a set of generally helpful modules for game development.
Blend4Web is a tool for interactive 3D visualization on the Internet
Framework for HTML5 Canvas oriented 2D video games
phina.js is game library
JSIso - An HTML5 Canvas Tile Engine