The DWG format is the lock-in.
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BricsCAD
Ghent-built CAD that reads and writes DWG natively; perpetual licences.
🇧🇪
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Archicad
Budapest's Graphisoft, the original BIM authoring tool.
🇭🇺
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Allplan
Nemetschek's Munich BIM suite for architecture and engineering.
🇩🇪
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CATIA / SOLIDWORKS
Dassault Systemes' French engineering platform.
🇫🇷