http://cad-3d.blogspot.com/2011/05/what-is-autodesk-123d-app.html
+ Free
- Windows-only
+ Freeform Modeling
Not sure how "closed" it is, in the sense that they are vague on the file formats you can export to (quite common with Autodesk products).
--- stefan boeykens --- bim-expert-architect-engineer-musician ---
Archicad28/Revit2024/Rhino8/Solibri/Zoom
MBP2023:14"M2MAX/Sequoia+Win11
Archicad-user since 1998
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