Impressive Silverlight Visualizations With Source Codes: Descry
Descry is a project to demonstrate the power of data and information visualization as a communication tool.
Currently, there are 4 examples provided, all built with Silverlight & come with the source codes.
There are also 2 very nice articles shared on visualization:
For a demo, click here.
P.S. Descry is not a toolkit. It contains classes and fragments of code or design elements that can be reused.