Geronimo! Part 1: The J2EE 1.4 engine that could

As a J2EE server, Geronimo can deploy and run your Web and enterprise applications. You can use Java ServerPages (JSPs), servlets, filters, and Enterprise JavaBeans (EJBs) to compose your application. The application has access to external RDBMS through Java Data Access API (JDBC) connector, to directory services through the Java Naming and Directory Interface (JNDI), to transactional message queues through the Java Message Service (JMS), to e-mail through JavaMail, and so on.