JS Game engines

http://craftyjs.com/
http://easeljs.com/
http://gamejs.org/

https://github.com/biilly/doodle-js
https://github.com/fairfieldt/xcjs
https://github.com/batiste/sprite.js
https://github.com/mrdoob/three.js
https://github.com/ysimonson/canvas.js
https://github.com/davebalmer/jo
https://github.com/lostdecade/diggy

http://www.aframejs.com/
http://gamequery.onaluf.org/
http://www.kesiev.com/akihabara/