A cross-platform statistical package for econometric analysis
A portable, multi-platform, command-line driven graphing utility
An interactive viewer for three-dimensional chemical structures.
Computer Algebra System written in Common Lisp
Robocode is a programming tank game for Java
FlightGear Flight Simulator: free open-source multiplatform flight sim
Toolkit for working with and mapping geospatial data
A planetarium software that shows a 3D simulation of the night sky
For exploring cellular automata like Conway's Game of Life.
a parametric 3D CAD modeler
A circuit simulator with graphical user interface (GUI)
An intuitive molecular editor and visualization tool
SUMO is a microscopic, multi-modal traffic simulation.
Model Railway CAD program
An USB programmer for PIC, dsPIC, AVR, serial memories