The various distributions and their components are as follows:
Sun GlassFish Communications Server - Includes the Sun GlassFish Enterprise Server software with added SIP capabilities, converged load balancer, Java DB, and Message Queue 4.1. Communications Server is available from http://www.sun.com/download as a file-based installer, which offers both graphic and command-line modes for installation. JDK 1.6 Update 16 is bundled with the file-based installer for Communications Server .
SailFin: Open source implementation of Sun GlassFish Communications Server. This distribution is available as a JAR file from https://sailfin.dev.java.net and includes an Ant distribution that has been extended with tasks to facilitate developing applications.