[hellcow]

In addition to persisted sessions across ssh, you can also split windows horizontally and vertically, rearranging them on the fly.

[ycmbntrthrwaway]

There is a nice function that I think GNU Screen does not have: C-b <space>. It rearranges all the windows dynamically, similar to dwm[0] layouts.

[0] http://dwm.suckless.org