vtwm 5.4.7-2.1 (i386 binary) in ubuntu jaunty

 VTWM is an enhanced version of the Tab window manager (TWM) that adds many
 features -- primarily a virtual desktop, meaning that what is currently on
 screen is just a portion of a larger workspace. What portion of the virtual
 desktop that is displayed, and whatever windows might be visible within it,
 are simple point-and-click operations within a scaled representation of the
 workspace.
 .
 For a more extensive description of VTWM's features, see
 <URL: http://www.vtwm.org/ >.