GNU Health - The Free/Libre Hospital and Health Information System
CADAM is the open source text-to-CAD web application
A cross-platform statistical package for econometric analysis
An advanced network simulator to design and configure virtual networks
An intuitive molecular editor and visualization tool
The Open Source CFD Toolbox
FlightGear Flight Simulator: free open-source multiplatform flight sim
GPS log file viewer and analyzer
Computer Algebra System written in Common Lisp
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)