Terra looks like a combination of Guake and Terminator so you can get a nice Quake-like drop-down terminal with terminal split views (multiple terminals in one window / tab) and more. Compared to Guake, it features a lot of extra options, such as configurable terminal width, select which monitor the terminal should be displayed on and more.

The application combines some of the features available in Guake and Terminator, resulting in a nice drop-down terminal emulator in which you can use multiple terminals in the same window (you can split the terminal horizontally or vertically):