The following are commonly used Open Source J2EE based Content Management System (CMS)
Magnolia is a leading commercial open-source Enterprise Content Management System based on the Java Content Repository standard (JSR-170). Magnolia is renowned for its outstanding combination of ease-of-use and enterprise architecture. It is used to power the digital communication of anyone from governments to leading FORTUNE 500 enterprises in more than 100 countries on all continents of the world.
Alfresco is the Open Source Alternative for Enterprise Content Management (ECM), providing Document Management, Collaboration, Records Management, Knowledge Management, Web Content Management and Imaging.
Alfresco relies on the open source Java technology such as Hibernate, Spring, Lucene, MyFaces, JSR-170, JSR-168 and web services into an easy to use, extensible and scalable Enterprise Content Management (ECM) system.
This Alfresco ECM bundle provides integration to portals and content management with integrated document management, document status, workflow and security.
Nuxeo is an extensible, global, robust, standards based Enterprise Content Management (ECM) solution which is available as an Open Source Software.
Nuxeo 5 was developed based on top of other open source software such as the the JBoss Group (a division of Red Hat), Apache Foundation and the Eclipse Foundation, and is developed in a fully open manner.
Nuxeo 5 was designed to allow implementors to build and run a large range of applications from within the ECM scope, closely matching enterprise needs from the server to the desktop.
Nuxeo 5 is a global solution ready to take on challenges of this new era of information management (Web 2.0, increasing quantity of digital information, lots of emails, online/offline, mobility, etc.)
Daisy is a content management system that offers out of the box CMS functionalities combined with solid foundations for extensibility, scalability and integration.
Daisy makes content management accessible to everyone by combining multiple valuable functionalities in an easy to use package which is suited for a variety of CMS requirements such as websites content management, intranets, knowledge management and even for product documentation.
Daisy is available for free with source code included where by the sources are released under the business friendly Apache license.
Daisy has an active community and development happens transparently and openly via its frequent updates and releases. Daisy is a Java-based application, and is based on the work of many great open source packages, without which Daisy would not have been possible.