Super fast HTML 5 2D rendering engine that uses webGL with canvas fallback
A Joyful 2D HTML5 Game Engine.
a 2D rigid body physics engine for the web
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.
Frozen is an open-source HTML5 game engine delivering ease-of-use, rapid development through tooling and modularity.
A virtual joystick for touch capable interfaces.
Panda.js HTML5 game engine
phina.js is game library