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

Free plan of PTC's browser-based professional CAD
Onshape is a cloud CAD system from PTC, built by founders of SolidWorks, that runs in a browser or on tablets. The free plan gives full modelling, assemblies and drawings, but is for non-commercial use and all documents are public.
From onshape.com/en/products/free, checked 19 Oct 2026. Quotes are the project's own words.
| Runs on | Web, iOS, Android |
|---|---|
| Commercial use | Non-commercial only Onshape's Free plan: “For non-commercial use only. All Onshape Documents are accessible to the public.” Paid plans are for commercial work. |
Sources: onshape.com/en/pricing, checked 19 Oct 2026. “Runs on” is from this listing. Blank means we haven't found it in official docs yet, not that it's unsupported.
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
The programmers' solid 3D CAD modeller
Alternative to Fusion 360
Python library for building parametric 3D CAD models
Alternative to Fusion 360
Pythonic code-CAD framework on the OpenCascade kernel
Alternative to Fusion 360