Simple Road Design and Earthworks
a parametric 3D CAD modeler
A CAD application for creating virtual LEGO models
very good CAD software
A Cross Platform and Open Source Electronics Design Automation Suite
PyAMS (Python for Analog and Mixed Signals) CAD approach
Solve Alignment of Road , Rail,Tunnel
Model Railway CAD program
A set of freeware applications for viewing/processing P-CAD files.
Free and open source pattern design software
A math-inspired CAD program in haskell. CSG, bevels, and shells
Open-Source Shoemaking
An EnergyPlus shell for parametric studies and more ...
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
Open source 3D software based on opencascade(CAD)
Arma Design Studio - CAD/CAM Software
Convert any image to gerber and drill files
2D CAD software
Open source Matlab code for nonlinear isogeometric analysis
Open Source Planar Linkage Mechanism Simulation and Synthesis Software
Lightweight L5e vehicle with freely accessible engineering documents