What is the difference between GlassFish Open Source Edition (OSE) and Oracle GlassFish Server (OGS)? If we got a dollar for every time one of us was asked this question we might have a simple monetization strategy.
The short answer is listed on the the main glassfish.java.net page: GlassFish Server Control.
This set of value-add software for enhanced and a more streamlined use of GlassFish in production is integrated in the Oracle-branded bits (available on OTN for evaluation) and now has an updated datasheet.
This covers Performance Tuner, Active Cache for GlassFish, Monitoring Scripting Client, Oracle Access Manager (Single Sign-on) Interoperability, Load Balancer Configurator and Plugin and Domain Administration Server Backup and Recovery. Remember that you can also upgrade from the Open Source bits to the Oracle GlassFish Server product using the update center.