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FreeCAD vs Bonsai: catalog facts
FreeCAD	Bonsai
Free Free and open source, funded by donations and sponsorship.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Parametric: change a dimension and the model updates through its history Sketch constrained 2D geometry and build 3D objects on top of it	Native IFC authoring rather than import and export Broad BIM scope from drawings to costing and scheduling
Workbenches vary a lot in polish and consistency CAD concepts plus FreeCAD’s own conventions make for a long learning curve	Requires Blender and familiarity with its interface Still pre-1.0 (v0.8.5)
Downloadable app	Downloadable app
Open source	Open source
License: LGPL-2.1	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 24, 2026

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