Vista, the Visual Statistics System (using XlispStat)

ViSta, the Visual Statistics System, features statistical visualizations that are highly dynamic and very interactive. Dynamic, High-Interaction, Multi-View Graphics: ViSta constructs very-high-interaction, dynamic graphics that show you multiple views of your data simultaneously. The graphics are designed to augment your visual intuition so that you can better understand your data. ViSta is written in Lisp, using the XLispStat extensions for statistical software development. The system is completely open and extensible. The Lisp programmer can add whatever capabilities are desired.
Find Vista, the Visual Statistics System (using XlispStat) at: http://forrest.psych.unc.edu/research/vista-frames/abstract.html