Fedora is a robust, modular, open source repository system for the management and dissemination of digital content. It is especially suited for digital libraries and archives, both for access and preservation.
DataStore is a Java based document repository server for storing, querying and fetching XML based documents. It is built on practical needs allowing the storage of semi-structured (well formatted, maybe validated, XML, XHTML and HTML) documents and un-structured documents (TXT).
xinco DMS™ is a powerful Web-based Information and Document Management System (DMS) for files, text, URLs and contacts, featuring ACLs, version control, full text search and a fully web-based client.
Harmonise is a metadata, taxonomy, and content management system written in Java and based upon the WebDAV standard. Unlike traditional CMSs, it focuses on metadata management and integrates that with content management and publishing.
Blandware AtLeap is a multilingual free Java CMS (Content Management System) with full-text search engine. Blandware AtLeap is a framework which allows you to rapidly start your own Web application.
MeshCMS is an online editing system written in Java. It provides a set of features usually included in a CMS, but it uses a more traditional approach: pages are stored in regular HTML files and all additional features are file-based, without needing a database.
Webman is a professional content management or website production system. It was used in more than forty big websites in Germany. (look at the history section)
eAdmin / OWX (standing for OmniaWeb-X) is a web-based site management software, a development framework, and list generator. It uses open source software to run