Free and open source pattern design software
very good CAD software
Free software for maps
Cross-platform Open-source 2D CAD
Free CAD software
Helps with the Mach3 CNC Threading functionality
Design your own pottery for 3D printing in full color
Free cad viewer for 3d drawings in different formats
Packing two dimensional rectangular elements at orthogonal table
Free multiphysics simulation software package
Open Knowledge on engineering development.
A package for Isogeometric Analysis in Octave and Matlab