XFce 4 is copyright © Olivier Fourdan (<fourdan@xfce.org>). The different components are copyrighted by their respective authors.

libxfce4util and xfprint are distributed under the terms of the BSD license.

libxfce4mcs and libxfcegui4 are distributed under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

xfce-mcs-manager, xfce-mcs-plugins, xfce-utils, xfce4, xfdesktop, xffm and xfwm4 are distributed under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.