There are a couple other parser generators for JS: * http://zaa.ch/2k http://zaa.ch/2k - Jison * http://inimino.org/~inimino/blog/peg_first_release http://ini

There are a couple other parser generators for JS: * http://zaa.ch/2k http://zaa.ch/2k - Jison * http://inimino.org/~inimino/blog/peg_first_release http://inimino.org/~inimino/blog/peg_first_release - another Packrat (has an es5 parser as an example) Plus a few more that work but produce generated code that's too slow to be useful.