A collection of packages providing extra functionality for GNU Octave
Geographic library
A cross-platform statistical package for econometric analysis
A portable, multi-platform, command-line driven graphing utility
An advanced network simulator to design and configure virtual networks
Computer Algebra System written in Common Lisp
Data Analysis, Simulations and Visualization on the Sphere
Open source finite element software for multiphysical problems
A planetarium software that shows a 3D simulation of the night sky
Model Railway CAD program
32/64 bit multi-platform Ethernet S7 PLC communication suite
Library to control radio transceivers and receivers
A powerful arbitrary-precision calculator.
Open Source Solid Modeling CAD
Viking is a free/open source program to manage GPS data
Agena is an interpreted procedural programming language.