Actually, the 'killer app' for me is tmux. Almost all the windows I had open were shells or browser windows, tmux is so good at managing my shell sessions I no

Actually, the 'killer app' for me is tmux. Almost all the windows I had open were shells or browser windows, tmux is so good at managing my shell sessions I no longer feel the need for more than one window. Gnome's simple split is enough if I need side by side on one monitor (which is rare).