A few weeks ago, I wrote ssh-chat.

The idea is simple: You open your terminal and type,

$ ssh chat.shazow.net

Unlike many others, you might stop yourself before typing “ls” and notice — that’s no shell, it’s a chat room!

via Why aren’t we using SSH for everything? — Medium.

I was just thinking about how useful and simple ssh is for doing end to end encryption for various services before being notified of this post.  On a linux box you can ssh -X remotehost and bring up any X-windowed app from a terminal command.  Very simple.  Very useful. Very secure.  For copying files there’s the scp command.  And one final shout out to the sshfs command for mounting remote filesystems.