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NovodeX (NovodeX Physics) - physics engine, developed by company NovodeX AG (situated in Switzerland), spinoff from ETH Zürich.
NovodeX Physics SDK has become a basis of PhysX SDK 2.x series.
Many NovodeX employees were working in Ageia for years, you can even find some of them (like Dr. Matthias Müller-Fischer, NovodeX AG co-founder, now - PhysX SDK research lead) in NVIDIA PhysX Development group.