mvnForum is an open source, powerful, easy to use, easy to setup bulletin board (forum) built on the Java J2EE technology (Jsp/Servlet). mvnForum is compatible with any Servlet Containers which supports Jsp 1.2 and Servlet 2.3. mvnFourm is free, opensource and released under the terms of the GNU General Public License. It means that you could use it free of charge to build your own discussion communities.