JyVis

JyVis is data visualization software which has the following features:
The name JyVis comes from the fact that an embedded Jython interpreter is the central element of the session recording and replay framework, and it is VISualization software. Visualizations can be prototyped in Python (Jython) too.

JyVis is a very young project, the only way to run it is to check out the code from CVS and build it yourself. Hopefully an executable will be released soon.