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

Modern parametric 3D CAD built on SolveSpace's solver and OpenCascade
From GitHub, fetched 19 Oct 2026.
Dune 3D is a newer open-source parametric 3D CAD application from the author of Horizon EDA. It combines SolveSpace's constraint solver with the OpenCascade geometry kernel, which gives it fillets, chamfers and STEP import and export.
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
Free plan of PTC's browser-based professional CAD
Alternative to SolidWorks, Fusion 360
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