Windows is tested and works fine. Tested under Windows 11, but should be fine in Windows 10. Most likely fine in Win 8 as well.
You will need to install Python 3 from the official Python site here ...
You will need to rename contacts2gs to contacts2gs.py and gspnp_responder to gspnp_responder.py
When you launch gspnp_responder.py the Windows Firewall will popup a warning. You must enable access for the modes you are in or likely to switch to, eg Public and Private networks.