A set ot tools for surveyors addon to many CAD environments
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
Aircraft Configuration tool
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
Free 3D Mobile CAD
Dedicated to computer-aided engineering Linux distribution
Precise gear geometry generator for spur and helical gears
An easy and flexible mathematical programming environment for Python.
Portable feed & speed calculator for turning and milling
Open Knowledge on engineering development.
3D CAM program for CNC mills/lathes
A package for Isogeometric Analysis in Octave and Matlab