a parametric 3D CAD modeler
An EnergyPlus shell for parametric studies and more ...
Software for electromagnetic simulation
Cross-platform Open-source 2D CAD
A canvas library for generating technical drawings
OpenNum lets you distribute solvers with a nice graphical interface
Precise gear geometry generator for spur and helical gears
Free multiphysics simulation software package
A package for Isogeometric Analysis in Octave and Matlab
A finite element data exchange system
Open Source CAD