Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Guake - Quake-style terminal for GNOME
A Quake-style terminal is a drop-down terminal which can be shown/hidden just like the console in Quake (and most of the first-person shooter games out there), using the press of a key (~ in Quake). Guake is a terminal application written in GTK which uses the F12 keyboard shortcut by default to show or hide it.
Guake features transparency, tabs, tray icon, configurable shortcuts, fullscreen mode and allows you to change terminal size, transparency level, appearance, font size and default shell interpreter.
Terminator - feature-rich terminal emulator
Terminator is a powerful terminal application written in Java with support for features like tabs, automatic logging, text drag & drop support, find function, split the current tab horizontally or vertically, profiles, appearance settings (transparency and background image, colours), plugins and configurable keyboard shortcuts.