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

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