mojo
mojo provides fast analyzes for your business processes
mojo is a standalone software and library for the fast analysis of business processes. Because of its lightweight architecture and its implementation in Java, it can be used as extension in your program, e.g., business process designer. It provides new researched compiler-based analysis techniques which supports very good failure location.
The software can be used under the GNU Lesser General Public License (LPGL): http://www.gnu.org/licenses/lgpl-3.0.txt