gwm

from The Free On-line Dictionary of Computing (8 July 2008)

GWM

   Generic Window Manager.  An extensible window manager for the
   {X Window System}.  It is built on top of an {interpreter} for
   the {WOOL} language.

   (ftp://export.lcs.mit.edu/contrib/gwm),
   (ftp://avahi.inria.fr/contrib/gwm).