An interesting beginning for a potentially valuable and interesting tool....

"Javascript Infoviz Toolkit -- Treemaps, Radial Layouts, HyperTrees/Graphs, SpaceTree-like Layouts, and more.in this Javascript suite for building data pretties. Higher-level than processing.js. (via O'Reilly Radar and chrisblizzard on Twitter)

• Multiple Data Representations
  Treemaps, Radial Layouts, HyperTrees/Graphs, SpaceTree-like Layouts, and more...
• Major Browsers Support
  IE6+, Firefox2+, Safari3+, Opera9.5+
• Open Source
  Licensed under the BSD License
• Library Agnostic
  You may use the JIT with your favorite DOM manipulation framework
• Extensible
  All visualization classes are mutable, so you can easily add/override any method you want.
• Composable
  Visualizations can be combined in order to create new visualization methods."

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