Have you tried syncthing? It works great with keepassxc.

Vaultwarden is pretty easy to self host.

I’m not sure if there’s one the best tool, depending on a case, I use mix of

• scp
• localsend
• croc
• https://github.com/dutchcoders/transfer.sh
• https://github.com/stonith404/pingvin-share
• pbcli (pastebin)
• I also have a script that sends me mail with files attached

https://www.fsarchiver.org/quickstart/ It’s faster and more efficient than just dd :)

WG Tunnel does that natively, you can whitelist some wifis and auto connect on other and optionally on mobile data

For me: uploading single file using their client ~25MB/s, downloading ~50MB/s (30-60MB/s). In newer versions of their linux client it’s possible to mount filen as network drive or to start webdav/s3 server.