The best replacement for crafty is easeljs.

The best alternatives to crafty are rated as following:
★★★★★  easeljs
★★★★  limejs
★★★★  calculating
★★★  sly
★★★  craft
★★★  artful
★★  stockfish
★★  cunning
★  artsy
★  gnu chess

Your alternative for crafty is not listed? Suggest!
Speaking about crafty, one probably shouldn't forget about winboard.

Other search terms related to crafty and their ratings are:
★★★★★ winboard
★★★★★ xboard
You have in mind a companion for crafty and it is not yet here? Propose!



Google Trends

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crafty
easeljs
limejs