File Transfer Terminal Tools
File transfer moves data between machines over a network, through protocols such as FTP, SFTP, HTTP and rsync over SSH.
In the terminal it covers copying a build to a server, mirroring a directory between two machines, restoring a backup, and sending one large file to another person directly. Transfers here tend to add resume after a dropped connection, checksums, compression, encryption and progress output, and they run unattended from scripts and cron.
Below is a list of terminal tools that work with file transfer.

aim
A command line download/upload tool with resume.
A command line download/upload tool with resume.

croc
Easily and securely send things from one computer to another.
Easily and securely send things from one computer to another.

curl
A command line tool and library for transferring data.
A command line tool and library for transferring data.

ffsend
Securely share files from the command line.
Securely share files from the command line.

jocalsend
A TUI file-sharing tool based on the LocalSend protocol.
A TUI file-sharing tool based on the LocalSend protocol.

lazyrsync
A friendly TUI for rsync.
A friendly TUI for rsync.

pikpaktui
A TUI and CLI client for PikPak cloud storage.
A TUI and CLI client for PikPak cloud storage.

portal
A quick and easy command-line file transfer utility.
A quick and easy command-line file transfer utility.

rclone
rsync for cloud storage
rsync for cloud storage

rsync
A fast and extraordinarily versatile file copying tool for both remote and local files.
A fast and extraordinarily versatile file copying tool for both remote and local files.

rsyncy
A status/progress bar for rsync.
A status/progress bar for rsync.

termscp
A feature rich terminal file transfer tool.
A feature rich terminal file transfer tool.

tran
Securely transfer and send anything between computers with a TUI
Securely transfer and send anything between computers with a TUI

zrok
a next-generation peer-to-peer sharing platform
a next-generation peer-to-peer sharing platform
Know any terminal tools that would be good for this list? Post a Tool here!