cgSceneGraph – Powerful Animation Framework With HTML5 Canvas
It is created with professional apps and games in mind, works cross-browser and has lots of built-in nodes like images, text, buttons, shapes, etc.
The framework is capable of managing complex scenes, supports mouse and touch events, has attributes for draggable + resizable and comes with a collision + particle system.
There is also support for asynchronous image loading, color manipulation and much more.
Compatibility: All Major Browsers