Wm2

WM2 window manager

wm2 is a window manager for X. It provides an unusual style of window decoration and as little functionality as its author feels comfortable with in a window manager. wm2 is not configurable, except by editing the source and recompiling the code, and is really intended for people who don't particularly want their window manager to be too friendly.

http://www.all-day-breakfast.com/wm2/