Apps with 'Dropdown terminal' feature

Terminal emulator for macOS supporting split panes, session restoration, advanced search, inline images, SSH connections, automation, and tmux integration.

Yakuake is a drop-down (Quake-style) terminal emulator based on KDE Konsole technology. Its design was inspired from consoles in computer games such as Quake which slide down from the top of the screen when a key is pressed, and slide back up when the key is pressed again.

Guake is a top-down terminal for Gnome (in the style of Yakuake for KDE, Tilda or the terminal used in Quake). Guake is already package by a number of distribution (among them are Fedora, Debian, Ubuntu or ArchLinux).

Xfce Terminal is a lightweight and easy to use terminal emulator application with many advanced features including drop down, tabs, unlimited scrolling, full colors, fonts, transparent backgrounds, and more.

Tilix is a tiling terminal emulator which uses the VTE GTK+ 3 widget with the following features:

Tilda is a Linux terminal taking after the likeness of many classic terminals from first person shooter games, Quake, Doom and Half-Life to name a few, where the terminal has no border and is hidden from the desktop till a key or keys is hit.

YeahConsole turns an xterm into a gamelike console. This means it will slide down from top of your screen if you hit a shortcut key. (You will need xterm version 168 or higher to make this happen).

Stjerm is a roll-down, quake-like terminal emulator. It's window is shown with a key shortcut. Stjerm is very minimalistic and works well with Compiz window manager.