Awesome, very interesting! Thanks for providing that.

WinFsp isn't "native" in the sense it's a wrapper on the Microsoft provided interface AFAICT

Shell Namespace extensions is the pure-windows way via COM and all that junk. WinFsp is very cool though since FUSE is a much nicer API but probably less you can do to be a very explorer thing

Thank you for the detailed explanation. Pure control of Explorer through COM also seems interesting. I'm still in the process of understanding WinFsp, so I can't get to that yet, but it's a challenge I want to tackle in the future.