I use dufs. Copyparty seems good too.

Why not use zipapp?

https://docs.python.org/3.13/library/zipapp.html

I’m perfectly happy to build my own NAS with NixOS and ZFS on it. I think it’s mostly a matter of getting the right hardware.

My biggest shortcoming at the moment is my NAS is also my gaming PC. It’s pretty inefficient to have that on all the time. But I haven’t had the time to build a dedicated NAS.

ntopng has all of that. I’m currently hosting it on my home router.