Terminator - terminal emulator

http://gnometerminator.blogspot.com/p/introduction.html

Terminator is a terminal emulator that is designed to make arranging terminals within a single window easier, with features including a number of keybindings, saving of layouts, and the ability to type to multiple terminals at the same time. It mirrors much of the behavior of the GNOME terminal, so many of the options found in the GNOME project can be found here as well.