IvanK Lib is a HTML5 Engine inspired by Flash (the tag line is actually “Like Flash, but faster” that uses the power of GPU accelerated WebGL to render 2d graphics on the screen.
GameMaker HTML5 is an HTML5 port of the commercial GameMaker game building system currently in open beta.
RPG.js is a HTML5 Game Framework focused on building 2.5D Zelda Bitmap-based Role Playing Games.
WebGL framework for Data Visualization, Creative coding and Game Development
An open source beta JS Engine.
A modern, well-supported commercial HTML5 games engine.