a parametric 3D CAD modeler
The programmer's solid 3D CAD modeller
A free and open source multiplatform 3D parametric modeler
Link branch FreeCAD
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Cross-platform Open-source 2D CAD
A Windows-based viewer currently supporting CDR & 2D DXF files
2D CAD for precise drawing
3D/2D Concrete Reinforcement in Bentley MicroStation
Design your own pottery for 3D printing in full color
2.5D CAD CAM emphasis on CAM and toolpaths
Delphi-like IDE for cross-platform game development
2D Finite Element Analysis for Acoustics
Open Source CAD