A free and open source multiplatform 3D parametric modeler
The programmer's solid 3D CAD modeller
A python parametric CAD scripting framework based on OCCT
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
Converts between many 3D data formats
Format converting tool for genotype Data (e.g.PLINK-MACH,MACH-PLINK)
Application for management of CAD files and projects
DXF2TXT converter for Linux
collection of illustrative programs:small games, simulators: C, Matlab