Why FreeCAD 16

OSE deliberately uses FreeCAD 16 legacy, which can be downloaded as a FreeCAD 16 Appimage on Linux.

FreeCAD 16 is not the latest version, but it has a simpler workflow with an uncluttered part tree. v16 supports the main OSE workflow pf scalable design - such as Merge Workflow for large scale collaboration.

There is also a practical philosophy to not using advanced features - as it creates more responsible design by not using automated constraints. See more at Merge_Workflow#Philosophical_Point.