FreeCAD
3D & parametric CADOpen-source parametric 3D modeller for real-life objects
- Stars
- ★ 34.5k
- Licence
- LGPL-2.1+
- Updated
Alternative to SolidWorks, Fusion 360

Constructive solid geometry modelling system with decades of history
BRL-CAD is a cross-platform solid-modelling system originally developed by the US Army Research Laboratory. It provides constructive solid geometry modelling, ray tracing, geometric analysis and format conversion.
Open-source parametric 3D modeller for real-life objects
Alternative to SolidWorks, Fusion 360
Lightweight parametric 2D/3D CAD with a constraint solver
Alternative to SolidWorks, Fusion 360
Modern parametric 3D CAD built on SolveSpace's solver and OpenCascade
Alternative to Fusion 360, SolidWorks
Free plan of PTC's browser-based professional CAD
Alternative to SolidWorks, Fusion 360
Free edition of Siemens' professional CAD for hobbyists and makers
Alternative to SolidWorks, Inventor