If you loved the terminal window accessibility found in Quake, then you'll surely love Visor. It provides a systemwide hotkey-enabled terminal window that you can access no matter what you're doing. Just by hitting one button will result to a terminal window sliding from the rip of your screen. If you think that's cool pick up this app, which is now on v1.2.1 where the "Choose File " button has been fixed. Visor is compatible with Quartz 10.4 and higher.