dojox.charting is a sub-library of the Dojo Toolkit, which is an open source modular JavaScript library designed to ease the rapid development of cross-platform, JavaScript/Ajax-based applications and web sites. It is dual-licensed under the BSD License and the Academic Free License.
dojox.charting is a sub-libarary of the Dojo Toolkit that provides fully JavaScript based 2D and 3D charting that is very feature rich.
The documentation for the libarary is available here: http://docs.dojocampus.org/dojox/charting/