Glassfish
GlassFish v3, built by the GlassFish community, is the first compatible implementation of the Java EE 6 platform specification. Many of the Java EE 6 themes carry over to Sun GlassFish Enterprise Server v3 - flexibility, extensibility, and developer ease of use. This lightweight, flexible, and open-source application server enables organizations to not only leverage the new capabilities introduced within the Java EE 6 specification, but also to add to their existing capabilities through a faster and more streamlined development and deployment cycle.
