You're probably hearing more and more about the Apache Geronimo open source application server. If you're ready to start learning about and using Geronimo, this page gives you links to the latest downloadable version of Geronimo, information on support from IBM®, and a guide on how to build your first Geronimo application in minutes.
Apache Geronimo is an open source Java 2 Platform, Enterprise Edition (J2EE) application server project developed by the Apache Software Foundation and licensed under the Apache License, Version 2.0 — one of the most flexible licenses available for open source software. This license gives you the freedom to use the technology however you want, build derivative works for distribution, and make code contributions of your choice back to the community.
Geronimo combines the best of open source technology and the innovation of open source development. IBM also offers a world-class support program available with several support tiers tailored to your needs.