A list of "open source" portal servers written in Java.

Continuing on the series of open source "stuff" written in Java (i.e.Rule Based Engines http://www.manageability.org/blog/stuff/rule_engines/view and Workflow Engines http://www.manageability.org/blog/stuff/workflow_in_java/view ), here now is a compilation of "Open Source" "Portal Servers" written in Java.

http://www.manageability.org/blog/stuff/open_source_portal_servers_in_java