Phaser is a light-weight 2D game framework for making HTML5 games for desktop and mobile browsers
phina.js is game library
JSIso - An HTML5 Canvas Tile Engine
A virtual joystick for touch capable interfaces.
Frozen is an open-source HTML5 game engine delivering ease-of-use, rapid development through tooling and modularity.
HTML5 game framework for web and iOS
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.
html5 game engine optimized for rapid development