A modular, configurable, and extendable EJB Container System that comes with Servers for both Local and Remote access.

JBoss is advanced middleware with a full J2EE based personality that IT departments look for. But that is not all, the OEM and ISV community embraced JBoss as a highly flexible service oriented architecture on which to build their own products.

JOnAS is a full J2EE platform, developed within the ObjectWeb consortium (www.objectweb.org), currently in the process of passing the Sun J2EE 1.4 Certification.

Apache Geronimo is a new effort coordinated by the Apache Software Foundation to make a J2EE compatible container.

JFox is an Open Source, standards-compliant, J2EE based application server implemented in 100% Pure Java, It comes from China Enterprise Open Source Community.

Resin Open Source provides JSP, Servlet, and EJB functionality.

EasyBeans is an open-source lightweight EJB container implementation developed within the ObjectWeb consortium. This can be integrated with JOnAS and Tomcat.