JOnAS is a leading edge Java EE 5 certified Open Source OSGi Enterprise Server by OW2.

1. JOnAS provides top level clustering mechanisms to ensure scalability and high availability
2. JOnAS' high level Management features satisfy professional SI administrators
3. Integration to the Enterprise SI is enabled through many mechanisms like Web Services, Java EE Connectors, LDAP access, IIOP, Websphere MQ connector, ...
4. JOnAS 5 runs on top of an OSGi architecture, rendering trivial the integration of existing OSGi and iPOJO components
5. Plugins for many IDEs make development on top of JOnAS easy