Marr DataMapper.
Marr DataMapper is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser Public License as published by the Free Software Foundation version 3 of the License.
Marr DataMapper 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 Lesser Public License for more details.
You should have received a copy of the GNU Lesser Public License along with Marr DataMapper. If not, see http://www.gnu.org/licenses/.