JBOSS
From Wikireedia
JavaBeans Open Source Software Application Server (JBoss) is an application server that implements the Java Platform, Enterprise Edition (Java EE). JBoss is written in Java and as such is cross-platform: usable on any operating system that supports Java.
JBoss was developed by JBoss, now a division of Red Hat. Licensed under the terms of the GNU Lesser General Public License, JBoss is free and open source software. Support for JBOSS, which is becoming in all intents, mandatory, does cost
