An EnergyPlus shell for parametric studies and more ...
Virtual Satellite
Open-Source Shoemaking
Free CAD software
Dedicated to computer-aided engineering Linux distribution
A set ot tools for surveyors addon to many CAD environments
An easy and flexible mathematical programming environment for Python.
dedalo is a 2d cad drawing software written in python3.
Cuts 3D objects from polystyrene foam (EPS/XPS)