"The three most common window managers in the Ubuntu world are Metacity, Compiz, and Kwin. Yes, there are others, such as Enlightenment, Fluxbox, Xmonad, and Ion, but I'm not going to go into why each of them rocks. Metacity is the default GNOME window manager. Kwin is the KDE window manager. And then there's Compiz. Compiz is the compositing window manager that is enabled in Ubuntu by default if your system can handle it. The function of the window manager is to draw the windows in a certain place, with a certain size, and let them be movable and resizable.
"Then you have the window decorator. This is where people get tripped up."
