Since nobody has said yet, I use screen pretty heavily. Want to run a long running task, starting it from your phone? Run screen to create a detachable session then the long running command. You can then safely close out of your terminal or detach with ctrl a, d and continue in your terminal doing something else. screen -r to get back to it.
I recently switched to tmux and boy, it's way better. I basically use only tmux now anymore. Creating panes to have two processes in one glance, multiple windows, awesome. Plus all the benefits of screen.
Eyyy, don't hate, this is how I start all my work programs. That command is really nice and creates all work programs as children of a single terminal session for easy closing later.
How does screen / tmux work when detached from a session, how does it keep the session alive (both when running locally, and while ssh:ing to a server)? Is there a daemon involved?