Nvidia makes PhysX Open Source

Ageia was founded in 2002 by five guys in Silicon Valley. The fabless semi company developed a real-time physics-processing engine (PPU) they called PhysX. Nvidia acquired the company in 2007 and made the software part of its toolkit. Recently the GPU maker said its PhysX SDK 4.0 physics engine will be available on December 20, 2018, under the open source 3-Clause BSD license. The revised license scheme is being extended backward to version 3.4. Nvidia's PhysX engine in Warframe (Source Nvidia)   PhysX has been used in gaming and simulations. It's the default physics engine for both Unity3D and Unreal