Orange: Interactive data analysis
JaxoDraw: Feynman Diagrams made easy!
A web interface to create custom vector-based visualizations
Draw vector graphics to scale using a descriptive language
Toolkit for working with and mapping geospatial data
Highly accurate ray-tracing software system for UNIX computers
Design and Display Happy Cube solutions
Inkscape extension to add and edit GNUplot graphs
graphICs is a converter transforming GDS II-data to Asymptote-code