BepuPhysics
A pure C# rigid-body library using SIMD, task parallelism, and data-oriented structures for collision and constraints.
Why use it
Custom .NET engines avoid native interop while controlling memory, scheduling, and simulation updates.
Where it fits
Find engines, frameworks, code libraries, version control, and production automation.
What to check
The API is low-level and includes no editor, vehicle, or complete character solution; users need stability tests.