Beryl, a fork of compiz 3D desktop for Linux

Yeah, me again, and again 3D desktops,
I’m sure you’ll ask yourself where’s the difference between compiz
and beryl.See it this way, what options do you have if you want to check
something on your desktop or another window, if a window is already
placed on top of it.

Sure, you can minimize the window, move the window or even close
it. You may use taskwitching, window transparency might work as
well.
But how about, just taking a quick look behind a window border or
corner, like what you would do if it’s just a piece of paper. Watch
this:

Beryl is a fork of the compiz 3D
desktop composition manger for Linux.