Virtual Satellite
Software for electromagnetic simulation
CAD Application entire developed in Python
A canvas library for generating technical drawings
OpenNum lets you distribute solvers with a nice graphical interface
Free 3D Mobile CAD
A set ot tools for surveyors addon to many CAD environments
Linux tiny CAD for educational purposes
Open DXFs with QCad
Open Knowledge on engineering development.
This plugin exports G-Code for a wirecutter
Application to manage userdefined animator toolbars
A finite element data exchange system
Drawing robot for electrical interconnection diagrams in DXF.
3D modeling tool based on the NURBS surfaces