a parametric 3D CAD modeler
An EnergyPlus shell for parametric studies and more ...
Software for electromagnetic simulation
Cross-platform Open-source 2D CAD
Static and Dynamic Structural Analysis of 2D and 3D frames.
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
CAD 2D for Land Surveying and Civil
Linux tiny CAD for educational purposes
COPanno optimizes the panels cuts.
Free multiphysics simulation software package
A designer’s program for describing parts of the building
A package for Isogeometric Analysis in Octave and Matlab