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 alternatives to Fusion 360
Last updated · 8 options
Quick answer: FreeCAD has the most stars on its repository of the 8 options here (★ 34.5k), followed by OpenSCAD (★ 10.5k). Stars show popularity, not fit, so check formats, platforms and licence for your own work.
Autodesk's cloud CAD/CAM/CAE tool, popular with makers and start-ups. Here are 8 free options, most-starred first.
What Fusion 360 costs
- Fusion subscription£52 per month, billed annually
- Personal useFree for qualifying personal, non-commercial use (home-based, under $1,000 a year in revenue)
From the vendor's own pricing page (autodesk.com), checked 19 Oct 2026. Prices change and may exclude tax, so check before you decide.
OpenSCAD
Code CADThe programmers' solid 3D CAD modeller
- Stars
- ★ 10.5k
- Licence
- GPL-2.0
- Updated
- Commercial OK
- STL
- 3MF
Alternative to Fusion 360
CadQuery
Code CADPython library for building parametric 3D CAD models
- Stars
- ★ 6k
- Licence
- Apache-2.0
- Updated
- Commercial OK
- DXF
- STEP
Alternative to Fusion 360
S
SolveSpace
3D & parametric CADLightweight parametric 2D/3D CAD with a constraint solver
- Stars
- ★ 4.2k
- Licence
- GPL-3.0
- Updated
- Commercial OK
- DXF
- STEP
Alternative to SolidWorks, Fusion 360
build123d
Code CADPythonic code-CAD framework on the OpenCascade kernel
- Stars
- ★ 3.5k
- Licence
- Apache-2.0
- Updated
- Commercial OK
- STEP
- STL
Alternative to Fusion 360
Dune 3D
3D & parametric CADModern parametric 3D CAD built on SolveSpace's solver and OpenCascade
- Stars
- ★ 2.1k
- Licence
- GPL-3.0
- Updated
- Commercial OK
- STEP
- STL
Alternative to Fusion 360, SolidWorks
Kiri:Moto
3D printing & CAMBrowser-based slicer and CAM for 3D printers, CNC and lasers
- Stars
- ★ 921
- Licence
- MIT
- Updated
- Commercial OK
Alternative to Simplify3D, Fusion 360
Onshape Free
3D & parametric CADFree plan of PTC's browser-based professional CAD
- Licence
- Proprietary
- Status
- Free (proprietary)
- Non-commercial only
Alternative to SolidWorks, Fusion 360
No tools match these filters. Suggest one.
Format and fit filters only use details we found in each project's own documentation. A tool that isn't shown may still support it.
FAQ
Is there a free alternative to Fusion 360?
Yes. CADAlts lists 8 options: FreeCAD, OpenSCAD, CadQuery, SolveSpace, build123d, Dune 3D, Kiri:Moto and Onshape Free.
How much does Fusion 360 cost?
Fusion subscription: £52 per month, billed annually; Personal use: Free for qualifying personal, non-commercial use (home-based, under $1,000 a year in revenue). These are the vendor's published prices, checked 19 Oct 2026 on autodesk.com.
Which Fusion 360 alternatives are open source?
FreeCAD (LGPL-2.1+), OpenSCAD (GPL-2.0), CadQuery (Apache-2.0), SolveSpace (GPL-3.0), build123d (Apache-2.0), Dune 3D (GPL-3.0) and Kiri:Moto (MIT). The others are free or freemium but not open source.
Which Fusion 360 alternatives run on a Mac?
FreeCAD, OpenSCAD, SolveSpace and Dune 3D. The others listed here aren't listed for macOS.
Which of these can open STEP files?
FreeCAD, CadQuery, build123d and Dune 3D, according to each project's own documentation (linked under “Fit” on its page). We haven't found it documented for the others.
Related categories: 3D & parametric CAD · Code CAD · 3D printing & CAM
Check file compatibility before switching. Free tools import STEP, DXF and other neutral formats well, but native SolidWorks, Altium or Revit files, drawing standards and PDM workflows may not carry over cleanly.