VTWM - A virtual window manager for X
VTWM is a virtual window manager for the X Window System. It is based
on twm, and can be used just like twm. It provides multiple virtual
screens, a 3D look, and lots of neat features.
Some Nice Features
  -  Any number of virtual screens, and a virtual desktop displaying
       the windows in miniature size
  
-  Manual and automatic panning of the virtual screen
  
-  Shaped icon managers which can grow in any two directions (e.g.
       two rows down and then to the left)
  
-  Support for shaped multicolored XPM icons
  
-  Configurable 3D look for borders, menus, icon managers, and
       icons
  
-  Stay up menus
  
-  Config file preprocessed with M4
  
-  Opaque move and resize
See the manual page for a comprehensive
list of features.
Take a look at a screen shot of my
configuration.
Grab the sources and try it out.
Jukka Partanen, <jtp@iki.fi>