Mutter: a window manager for GNOME 3

Because people who work on graphical interface are mostly attention deficit teenagers who still see their computers as video game consoles that also do some other boring stuff that must be made BETTER by making the windows wobble and spin.

And anyone who doesn't see the point in getting graphics cards that cost more than the rest of the system and installing proprietary pound-me-in-the-ass drivers from nVidia are useless Luddites who can go frig off as far as they're concerned.