I made a little weekend project: a javascript version of the CFDG interpreter; my writeup and a demo is here: http://dl.dropbox.com/u/6600185/cfa/cfademo.html
It's less mature than Algorithm Ink (http://azarask.in/projects/algorithm-ink/#0656fbe7), but I do plan to continue to keep developing it.

Thanks to some of the CC-licensed gallery examples as well for test & show-off fodder.
Let me know what sorts o' bugs you're seeing; I'm sure there are plenty! Code is at: http://github.com/danshoutis/cfa-js
Thanks and cheers,
-- Dan