Graph Plotting Package and Scientific Scripting Language
Pyxplot is a scientific scripting language, graph plotting tool and vector graphics suite. It runs in a command-line environment under Linux, Mac OS X, and other POSIX systems.
Open Source and Portable object oriented software for 3D digital image segmentation and visualization. Pipes and Filters Architechture.
Implemented in C++, and uses FLTK, VTK, ITK, TCL (plugins), and pipeline filters implemented in XML. DICOM support.