GNOME is the GNU Network Object Model Environment.  The GNOME project
intends to build a complete, user-friendly desktop based entirely on
free software.  For more information, see http://www.gnome.org.

To download GNOME, go to
ftp://ftp.gnome.org/pub/GNOME/ 

or to a mirror site listed at
http://www.gnome.org/ftpmirrors.shtml
(Recommended - their main site can be very busy.)