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

The programmers' solid 3D CAD modeller
From GitHub, fetched 19 Oct 2026.
OpenSCAD builds 3D models from a script rather than interactive modelling, using constructive solid geometry and extrusions. It is very popular for parametric 3D-printable parts, and Thingiverse's Customizer was built on it.
Open-source parametric 3D modeller for real-life objects
Alternative to SolidWorks, Fusion 360
Python library for building parametric 3D CAD models
Alternative to Fusion 360
Lightweight parametric 2D/3D CAD with a constraint solver
Alternative to SolidWorks, Fusion 360
Pythonic code-CAD framework on the OpenCascade kernel
Alternative to Fusion 360
Modern parametric 3D CAD built on SolveSpace's solver and OpenCascade
Alternative to Fusion 360, SolidWorks
Browser-based slicer and CAM for 3D printers, CNC and lasers
Alternative to Simplify3D, Fusion 360