I have just started looking at Drools 5.3 with a view to running the Guvnor on Glassfish. I have been using Drools 5.1 Guvnor on Glassfish 2.1 very happily for some time but I thought that I should look at upgrading. In fact, some time ago, I posted instructions here on how to setup authentication for Guvnor against a Glassfish realm. However, I notice that there are now different Guvnor binaries for several different ASs but that list does not include Glassfish. Since Glassfish 2.1 includes Tomcat as its JSP/Servlet container I have used the Tomcat version and on first inspection it appears to work. Have other users tried this combination? Did it work/not work for you? Chris