a parametric 3D CAD modeler
An EnergyPlus shell for parametric studies and more ...
Software for electromagnetic simulation
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
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
CAD 2D for Land Surveying and Civil
A designer’s program for describing parts of the building
A package for Isogeometric Analysis in Octave and Matlab
Cuts 3D objects from polystyrene foam (EPS/XPS)