The other "decent" commercial one that can be licensed is C3D (ASCON/АСКОН uses a CAD kernel based on it in КОМПАС 3D) but it is Russian and thus currently "beh

The other "decent" commercial one that can be licensed is C3D (ASCON/АСКОН uses a CAD kernel based on it in КОМПАС 3D) but it is Russian and thus currently "behind sanctions". Here is a bit on it from the author of Plasticity: https://www.youtube.com/watch?v=WvwiH1DOK1M https://www.youtube.com/watch?v=WvwiH1DOK1M it initially was based on C3D.