A python parametric CAD scripting framework based on OCCT
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
Draw vector graphics to scale using a descriptive language
Toolkit for working with and mapping geospatial data
French Geographic Information System
Another drawing editor for LaTeX with PSTricks & TikZ
The programmer's solid 3D CAD modeller
A Windows-based viewer currently supporting CDR & 2D DXF files
E-XD++ Flow Chart Control for C, Visual C++, .NET, ASP.NET, with codes
power system configuration and simulation, c/c++ and .NET
E-XD++ Diagram Control for C/C++, .NET, the professional Diagram.
Converts between many 3D data formats
3D Engine with some extra features based on the D3x3D Engine for VB6
A drawer for origami crease pattern