first ergonomic keyboard with Trackpoint

QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)

Deliver web apps with confidence 🚀

Playground

Main development repository for GAP - Groups, Algorithms, Programming, a System for Computational Discrete Algebra

Moving Refactoring Singular from Berlios to GitHub...

sources for the Singular computer algebra system