Actual links instead of <censored> redirection:

http://www.danvk.org/dygraphs/

http://www.highcharts.com/

http://cartographer.visualmotive.com/

Ah, thanks - I pasted from a tweet.

Dygraph is very pretty but if you have a significant percentage of users on IE I'd definitely double and triple check the performance first.

As I mentioned below, the sample chart is very choppy on IE8 (although it's wonderful on Safari, FF and Chrome).

I'm using FF 3.5 on a Core 2 Duo laptop and running my mouse across the graph back and forth uses an entire core. Behold, the power of javascript!

I've actually been pleasantly surprised by the performance of dygraphs under excanvas. The zoom interaction looks a bit funky, but it does work. The highlighting is fairly smooth on the machines I've tested.

And also don't forget Protovis: http://vis.stanford.edu/protovis/

Thanks, that shoulda been in the list.

Also check out http://raphaeljs.com and http://g.raphaeljs.com