Qcad

HPGL-DXF project can convert HPGL files into DXF format, which can be read by the likes of QCAD. HPGL-DXF is a small program that was written originally to allow the conversion of HPGL formatted circuit board CAM files into DXF files so that they could be subsequently processed by a laser... Platforms: *nix

Develop finite element stress analysis programs, that work with free cad systems(Maybe QCad). Right now there's only a 2d gridded structure analysis prog with a crappy interface, written mainly in octave. Platforms: Windows, Mac, Linux

ArcheOS is the acronym of Archeological Operating System. ArcheOS distribution is a GNU/Linux live distribution built for archaeological aims and based on PCLinuxOS. Here you can download the .iso image. To run ArcheOS, you have to burn a DVD with archeos_1-0-1.iso and put it inside your DVD... Platforms: *nix