A math-inspired CAD program in haskell. CSG, bevels, and shells
A CAD application for creating virtual LEGO models
A Cross Platform and Open Source Electronics Design Automation Suite
Free and open source pattern design software
Open source Matlab code for nonlinear isogeometric analysis
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
Open Knowledge on engineering development.
A designer’s program for describing parts of the building
Open Source CAD