Jboss Portal with Portlets
It is provided by Jboss team. Jboss Portal meets JSR301 specyfication and Portles follow JSR286. This is abstraction layer added to webpage served by application servers. All is done to simplify creating portals. Portlets are components for interacting with portlet container.Each portlet are in separate window. Portal has to agregate content, with this technology it’s easy. If you want put forum on Portal, you simply copy file with forum portlet to deploy directory and that’s all. Forum portlet can use global portal authentication, and also has aditional preferences, user can for example minimize window with forum. More details I give you in future. 
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