Where can I find a tile engine for HTML5 , for writing 2D games?
Possibly: http://www.effectgames.com/effect/ and in particular http://www.effectgames.com/effect/#Article/docs/Sprites_and_Tiles_Guide However note that effect is free to use but proprietary and not open source.
Other Javascript/Canvas game engine libraries that would make it easy (but may not have specific tile support/documentation):
Sites you might want to follow:
This engine, called Tile, is a work in progress. If anything, it might give folks looking to write their own engines a few ideas about what to do (or what not to do, if you prefer).
This site compares a few well.
http://city41.github.io/breakouts/