MMisovec - I would most likley create an XML Data Structure with real time webapp updating. I would use the J2EE web server container to manage the servlet sessions during data updates to the XML datafile if I needed to share information between webbapps. Tomcat 5 works great with JSPwiki and you may be able to take advantage of its J2EE container for manging the sessions and also create a database Realm. The WAR file remote upload works great with Tomcat 5 also.
- Mike Misovec