BEPUphysics

I have seen there is a separate repo for BEPU with monogame.
Since I decided to use monogame for a new project (space sim) I need a double precision version of bepu physics for monogame.
Is there any? I could not find the 2 different versions.

I don't maintain one and I'm not aware of any.

That said, the changes needed to make the latest dependency free version run with MonoGame are few or none depending on your target platforms. Double precision would be more tedious, but it's still pretty easy (with a few corner cases like structs with FieldOffsets built for single precision).