JavaScript Information Visualization Toolkit (JIT)

I’ve been personally waiting for something like this for a while….
What is JIT?

The JIT is an advanced JavaScript infovis toolkit based on 5 papers about different information visualization techniques.
The JIT implements advanced features of information visualization like Treemaps (with the slice and dice and squarified methods), an adapted visualization of trees based on the Spacetree, a focus+context technique to plot Hyperbolic Trees, and a radial layout of trees with advanced animations (RGraph).

Read more at http://blog.thejit.org/javascript-information-visualization-toolkit-jit/