Xmdvtool

XmdvTool is a public-domain software package for the interactive visual exploration of multivariate data sets. It supports four methods for displaying flat form data and hierarchically clustered data:

1. Scatterplots
2. Star Glyphs
3. Parallel Coordinates
4. Dimensional Stacking

XmdvTool also supports a variety of interaction modes and tools, including brushing in screen, data, and structure spaces, zooming, panning, and distortion techniques, and the masking and reordering of dimensions.

Home page: http://davis.wpi.edu/~xmdv/