The Hippo Portal is a portal framework allowing easy integration of a Jetspeed2 based portal, Hippo CMS and Hippo Repository.
Hippo Portal API: defines the java interfaces implemented/used in the other projects.
Hippo Portal: implements the interfaces described in Hippo Portal API. Most important features include handling of communication between Portal and Repository.
Hippo Portal J2: implements Jetspeed2 customizations.
Hippo Portal PAC: implements Portal services and provides standard Portlets. Portlets can be customized and extended.