"Without internet" usually means without interconnected subnets or offline, e.g. using USB to exchange data, or p2p via Bluetooth. What do you mean?

Ftp, http, and other such protocols run on top of IP (internet protocol), so are by definition "the internet"

It would be nice to have p2p (usb, Bluetooth) note exchange. I believe that Scuttlebutt Protocol tried to do something like that...