Yakuake

Yakuake is a terminal emulator that will slide down your screen when you press a shortcut key. It allows very fast access to your shell from any program.

It is similar to other programs like Guake and Tilda.

Install

$ sudo apt install yakuake

Change Shortcut

The default shortcut to open Yakuake is F12. This conflicts with the default shortcut to open developer tools in browsers. I personally use F1 as the key is easy to reach and its default functionality is useless to me.

To change this, open application System Settings, open section Shortcuts, and choose Global Shortcuts. In that screen, select Yakuake as component and click on the shortcut to change it.