[v5v3]

You can also run tmux on the remote server in detached mode, so disconnections are tolerant.

[esseph]

That's just a tiny feature of it, and not even the most important.

Intelligent local echo. Did you type that char? How many times? Are you sure? Now you never have to guess..

UDP based means avoiding Path MTU problems.

Connection "roaming" and auto connect, etc.

Really, really cool. I wish mosh was everywhere :/