basicPortal CMS (TM) is an Enterprise Information Portal (EIP) based entirely on open source software technology that enables users to develop standard and inexpensive, cross-platform web applications that are dynamic, flexible, and very fast.

Pluto is the Reference Implementation of the Java Portlet Specfication (JSR 168)

Jetspeed is an Open Source implementation of an Enterprise Information Portal, using Java and XML. The data presented via Jetspeed is independent of content type, This means that content from for example XML,RSS or SMTP can be integrated with Jetspeed.

The eXo platform is a powerful Open Source - JSR 168 compliant - enterprise portal built from several modules. It's based on Java Server Faces, Pico Container, JbossMX and AspectJ.

Liferay is a portal designed to deploy portlets that adhere to the Portlet API (JSR 168). Many useful portlets are bundled with the portal (Mail, Document Library, Calendar, Message Boards, etc)

Nukes on JBoss is a full fledged Content Management System (CMS) with advanced user/group management, security rules and pluggable components. Components can be deployed at runtime while the application is running. It is all written in JBoss.

jPortlet is an open-sourced implementation of a Portlet Container. Portlets are components that run inside the portlet container of a portal server, similar to a servlet running on an application server. The interface between the container and the portlets is defined by the Portlet API.

OpenPortal is a web portal framework that allows its users to personalise their web page on the site running this software. The users constructs his/her page by selecting between a set of portlets made available. A portlet can be a servlet or a JSP page.

The Portlet Bridge Portlet is a web clipping proxy portlet that allows web application be hosted as portlets. The web clipping can be customized using XSLT.

A portlet container which is Portlet Specification(JSR-168) compliant.

Nodevision Portal is a JSR-168 compliant Java Enterprise Portal solution. It has a freely definable layout and a Graphical Administration Interface to deploy portlets, add users or change the layout of the portal.

jPorta is a fully functional portal engine built on top of the Jeenius Framework. It works with any 2.3 compilant servlet engine and comes with a number of useful gadgets.

Stringbeans is a portal framework compatible with JSR 168 Portlet API standard. Stringbeans offers JAAS based authentication, flexible portlet access control and monitoring, and support for mobile clients. It is bundled with portlets for displaying charts, reports, database tables, XML documents, RSS headlines, etc.