Probatron is an implementation of ISO Schematron (ISO/IEC 19757-3:2006) written in Java. Schematron is a language for making assertions about structures in XML documents.

This source code is available under the GNU Affero General Public License (http://www.fsf.org/licensing/licenses/agpl-3.0.html).

A copy of the licence is also included in the distribution at http://code.google.com/p/probatron/source/browse/trunk/licences/probatron-copying.txt.