Ruby-GNOME - A set of Ruby language bindings for the GNOME development environment including Ruby/GTK+. - http://ruby-gnome.sourceforge.net/
Ruby-GNOME2 - A set of Ruby language bindings for the GNOME 2.0 development environment including Ruby/GLib2, Ruby/GTK2, Ruby/GdkPixbuf2, Ruby/GNOME2, Ruby/GnomeCanvas2, Ruby/Libart2, Ruby/Libglade2, and Ruby/GConf2. - http://ruby-gnome2.sourceforge.net/