A js graphical library for drawing charts. It stands on top of jQuery, MooTools or Prototyp, depending on the host project fundations, and provides a large serie of nice colored animated charts.
Axiis is an open source data visualization framework designed for beginner and expert developers alike. Built upon the Degrafa graphics framework and Adobe Flex 3, it provides a nice way for displaying clean charts.
Another js charting library. But this one doesn't use canvas nor SVG, it creates png as dataurls, and seems rather fast. The main forepoint is that it works out of the box in most of the browsers of the market.