This is FNA, an XNA4 reimplementation that focuses solely on developing a fully accurate XNA4 runtime for the desktop.
Project Website: https://fna-xna.github.io/
FNA is released under the Microsoft Public License. See LICENSE for details.
FNA uses LzxDecoder.cs, released under a dual MSPL/LGPL license. See lzxdecoder.LICENSE for details.
FNA uses code from the Mono.Xna project, released under the MIT license. See monoxna.LICENSE for details.
Documentation for FNA can be found on the FNA wiki:
https://fna-xna.github.io/docs/
Issues and patches can be reported via GitHub: