I've been doing a lot of cross-platform, rapid proto-developing, decision making and al this crappy not barely working stuff lately... There are so many alternatives not evena Furry Octo Robot could manage it... so it started writing is own list.
- [EnchantJS](http://enchantjs.com/)
- Motto: A simple JavaScript framework for creating games and apps
- [IsogenicJS](http://www.isogenicengine.com/)
- Motto: The world's most advanced HTML5 multiplayer game engine
- [ImpactJS](http://impactjs.com/)
- Motto: THE AWESOMEST WAY TO CREATE EVEN MORE AWESOME HTML5 GAMES!
- [MelonJS](http://melonjs.org/)
- Motto: A lightweight HTML5 game engine
- [KineticJS](http://kineticjs.com/)
- Motto: An HTML5 Canvas JavaScript framework that enables high performance animations, transitions, node nesting, layering, filtering, caching, event handling for desktop and mobile applications, and much more.
- [Construct2](https://www.scirra.com/)
- Motto: Construct 2 is a game maker for Windows that lets everyone create amazing games. !!!: IDE, no Code
- ...
- more coming!
- PhoneGap
- Low Performance, High extendibility
- CocoonJS
- High Performance, No extendibility, WebGL support
- Game Closure
- High Performance, Good extendibility, -Young- Insane good product, open source
- Web Marmelade
- Mid Performance, Good extendibility, Pricy!!!
- [Crosswalk](https://crosswalk-project.org/)
- Not Working!?
- SpellJS
- Still to come
- ...
- more coming!