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FreeCAD vs Alibre Atom3D: catalog facts
FreeCAD	Alibre Atom3D
Free Free and open source, funded by donations and sponsorship.	Paid Requires a paid license or subscription. Trial availability and licensing depend on the…
Windows, macOS, Linux	Windows
Parametric: change a dimension and the model updates through its history Sketch constrained 2D geometry and build 3D objects on top of it	Supports parametric part modeling Targets hobby fabrication and 3D printing
Workbenches vary a lot in polish and consistency CAD concepts plus FreeCAD’s own conventions make for a long learning curve	Windows only; advanced capabilities belong to other Alibre editions.
Downloadable app	Downloadable app
Open source	Closed source
License: LGPL-2.1	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.