The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.
Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.
Kiwi.js is a blazingly fast mobile & desktop browser based HTML5 game framework. It uses CocoonJS for publishing to the AppStore.
2D HTML5 rendering engine for game development
Fast and lightweight WebGL game engine
Panda Engine - HTML5 Game Engine
3D WebGL engine.
The Isogenic Game Engine