The programmer's solid 3D CAD modeller
A free and open source multiplatform 3D parametric modeler
A python parametric CAD scripting framework based on OCCT
Cross-platform Open-source 2D CAD
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
Toolkit for working with and mapping geospatial data
Draw vector graphics to scale using a descriptive language
Free minimalist software for maps, import DWG, DXF, SHP, KML, GeoJSON
Synchronous Reluctance (machines) - evolution
Another drawing editor for LaTeX with PSTricks & TikZ
CAD Draw, CAD Control, printing, C/C++,.NET Source Codes
Surface Explorer 3D plots mathematical surfaces in 3D.
E-XD++ Flow Chart Control for C, Visual C++, .NET, ASP.NET, with codes
Open Source Desktop GIS with Surveying and Cartography Functionality
Print and Report Control Source Codes for C/C++, .net
French Geographic Information System
Simple Road Design and Earthworks
A Windows-based viewer currently supporting CDR & 2D DXF files
E-XD++ Diagram Control for C/C++, .NET, the professional Diagram.
power system configuration and simulation, c/c++ and .NET
HMI - SCADA Graphics Visualization Source Code Solution For C/C++
Linear static structural analysis of 2D / plane frame and truss