Hi,

I am late to the party, but I was also building in this space in the last year,

Basically I did a peer to peer filesystem named keibidrop: https://keibidrop.com/

I made it public last week. It does what local send does, but also via WAN. Still did not launch the mobile apps.

And 1 up is that it has also a virutal filesystem that is synced both ways.

repository is here: https://github.com/KeibiSoft/KeibiDrop

The code is open source, except for the UI, and I did benchmark on loopback vs localsend (local send is faster :D )

https://keibisoft.com/blog/keibidrop-benchmarks-vs-competiti...

and was also trying to get a commenting thread in /r/golang yesterday!

behind the hood I went with PQC, + gRPC + FUSE.