Virtual Satellite
Solve Alignment of Road , Rail,Tunnel
Cross-platform Open-source 2D CAD
A canvas library for generating technical drawings
OpenNum lets you distribute solvers with a nice graphical interface
Open Knowledge on engineering development.
This plugin exports G-Code for a wirecutter
A designer’s program for describing parts of the building
A package for Isogeometric Analysis in Octave and Matlab
Easy animator session file manipulation