Window Maker Desktop: Lightweight Linux Minimalism
Window Maker is a fast, lightweight window manager based as closely as possible on the look and feel of the NeXTStep interface.
My very first impression was that it starts up blisteringly fast, even on my low-powered machine. There's minimal screen furniture on startup – no menu bar, just a couple of icons in the top right corner and one in the top left.
The look is initially a little blocky, and seems almost too sparse, but I very rapidly got used to it.
Double-clicking one of the right-hand icons (the Dock) will fire up (in order from the top) an "About" screen, an xterm, and the WPrefs configuration editor. The three little dots in the corner of the xterm and WPrefs icons mean that these are programs which can be launched. You can if you prefer drag the Dock over to the other side of the screen.