Flot. JS / Canvas library, supports excanvas for IE. Good looking, straightforward. http://code.google.com/p/flot/ http://code.google.com/p/flot/ I have been

Flot. JS / Canvas library, supports excanvas for IE. Good looking, straightforward. http://code.google.com/p/flot/ http://code.google.com/p/flot/ I have been using it for a while in production, am happy with it.