GlassFish for Commercial Use

https://blogs.oracle.com/theaquarium/entry/glassfish_for_commercial_use
http://glassfish.java.net/public/CDDL+GPL.html
http://www.openfoundry.org/tw/licenses/2061-cddl

Difference between GlassFish Open Source and Commercial Editions (GlassFish For Business):
https://blogs.oracle.com/GlassFishForBusiness/entry/difference_between_glassfish_open_source

GlassFish Usage Metrics
https://wikis.oracle.com/display/GlassFish/UsageMetrics