Teminator.

I see many people suggest tmux, but I have not seen suggestions for my favorite terminal emulator.

Ctrl+Shift+E for vErtical split Ctrl+Shift+O for horizontal

This is a killer feature. It is also much better than tmux because scrolling up is naturally supported.

I always keep an instance of Teminator running full screen on one monitor and whenever I need another terminal, I just split the screen, or go to the relevant already open post of the screen.

Having a visual overview of all instances of very helpful and much better than using tabs.

The other killer feature in bash is Ctrl+r.