The GWindows Tools and documentation are distributed under the terms of the GNU General Public License.
The GWindows framework is distributed under the terms of the GNU General Public License with the same exceptions found in the GNAT run time library making it possible to include GWindows in non open source programs as well.
All of GWindows is Copyright (c) 1999-2004 David Botton and distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.