Free and open source pattern design software
Simple Road Design and Earthworks
A canvas library for generating technical drawings
Demonstrates a quadtree for spatial indexing of triangles
Free cad viewer for 3d drawings in different formats
An Open source Analysis and SImulation Toolbox for Fuel Cells
Software to analyse 3D and 2D framed structures, also gives matrices
Autorun enabler for Autodesk Inventor VBA projects