CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
Software for electromagnetic simulation
CAD Application entire developed in Python
A canvas library for generating technical drawings
An easy and flexible mathematical programming environment for Python.
Linux tiny CAD for educational purposes
Cuts 3D objects from polystyrene foam (EPS/XPS)