Never sure about these things, mainly because I'm not so certain about this heavy reliance on JS only Apps. Well documented effort though.
Phighcharts is a PHP wrapper for the Highcharts API by @catchamonkey. A valuable addition to one of the better charting tools out there.
A new resource for finding and hiring creative freelance talent. (Disclosure: It's ours).
A comprehensive selection of data visualisation tools from Datavisualization.ch
A go to (sorry) resource for any Flash, and now HTML5, developer for years now.
Bounce dropping balls around the screen by drawing lines in strategic places. Not the greatest name though.