CAD

nanoCAD - professional, cost-effective CAD Software with powerful 2D/3D modeling tools for viewing and drawing DWG files in engineering and architecture. Free download.

Rapid prototyping CAD IDE for RepRap and RepStrap 3D printing machines. - GitHub - GilesBathgate/RapCAD: Rapid prototyping CAD IDE for RepRap and RepStrap 3D printing machines.

Bricsys makes innovative CAD software (BricsCAD) for 2D drafting, 3D modeling, BIM and mechanical design - all in .dwg file format.

A community hub for CodeCAD parts, OpenSCAD, CadQuery, JSCAD and more

CMS IntelliCAD is the intelligent, powerful and affordable full-featured 2D 3D DWG, DXF, DWF compatible CAD Software.

FreeCAD, the open source 3D parametric modeler