GNU Health - The Free/Libre Hospital and Health Information System
CADAM is the open source text-to-CAD web application
An advanced network simulator to design and configure virtual networks
A cross-platform statistical package for econometric analysis
Computer Algebra System written in Common Lisp
FlightGear Flight Simulator: free open-source multiplatform flight sim
The Open Source CFD Toolbox
A planetarium software that shows a 3D simulation of the night sky
Scanning probe microscopy data visualisation and analysis
A circuit simulator with graphical user interface (GUI)
PC based Oscilloscope and Spectrum analyzer using sound card
Model Railway CAD program
GPS log file viewer and analyzer
a parametric 3D CAD modeler