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

Browser-based slicer and CAM for 3D printers, CNC and lasers
From GitHub, fetched 19 Oct 2026.
Kiri:Moto from Grid.Space is a free tool that runs in the browser and generates toolpaths for FDM and resin printers, CNC mills, laser cutters and wire EDM, with no install needed.
From grid.space/kiri, checked 19 Oct 2026. Quotes are the project's own words.
| Runs on | Web |
|---|---|
| Commercial use | Allowed Open-source licence (MIT): the Open Source Definition rules out restrictions on fields of use, including business use. |
Sources: opensource.org/osd. “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
Open-source slicer with built-in printer calibration tools
Alternative to Simplify3D
The programmers' solid 3D CAD modeller
Alternative to Fusion 360
Feature-rich open-source slicer for FFF and resin printers
Alternative to Simplify3D
Popular open-source 3D-printing slicer
Alternative to Simplify3D
Python library for building parametric 3D CAD models
Alternative to Fusion 360