Mayan EDMS is distributed under the GPL 2.0 License. The complete license terms are included below.
Copyright (C) 2011 Roberto Rosario
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2.0 as published by the Free Software Foundation.
This program is 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.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.