Open Source Document Management Solutions written in Java

• Alfresco - Alfresco is an open source, open-standards content repository built by the most experienced content management team that includes the co-founder of Documentum. The Alfresco product has a lean, modular component architecture that allows new functionality to be added without any system disruption and is significantly faster than proprietary commercial systems.
      
• Apache Lenya - Apache Lenya is an Open Source Java/XML Content Management System and comes with revision control, site management, scheduling, search, WYSIWYG editors, and workflow.
      
• Contineo - Contineo is a web based document management system. It supports its users by managing documents in most popular formats. Contineo aims to fulfill all phases of document lifecycle. You can create and develop documents by using office software. With contineo itself, you can publish, search, and manage the versions of documents. Further, you can communicate with some other users directly or via e-mail.
  Contineo was founded as a pure Java project in 2003. It is the attempt of the conversion of an easy to use und easy to extend document management system. Thats why contineo is developed under an open source license.
  At the moment contineo finally exists in version 1.2. Version 2.0 will be coming soon.
      
• Daisy - Daisy the Open Source CMS
  Daisy is a comprehensive content management application framework, consisting of a standalone repository server accessible through HTTP/XML (using the ReST style of WebServices) and/or a high-level (remote) Java API, and an extensive browsing and editing DaisyWiki application running inside Apache Cocoon. Daisy is licensed under the commercially-friendly Apache License 2.0. Outerthought provides commercial services around Daisy
  
      
• DSpace Federation - A groundbreaking digital repository system, DSpace captures, stores, indexes, preserves, and redistributes an organizations research material in digital formats.
  DSpace is freely available as open source software you can customize and extend.
  
  Developers, researchers, and users worldwide contribute their expertise to the DSpace community.
  
  
      
• Fedora - Fedora is a general purpose repository service developed jointly by The University of Virginia Library and Cornell University. The Fedora project is devoted to the goal of providing open-source repository software that can serve as the foundation for many types of information management systems.
  The software demonstrates how distributed digital information management can be deployed using web-based technologies, including XML and web services.
  
  
      
• FlexStor - FLEX-db is an open source asset management product developed in Java and EJB architecture.
      
• JackRabbit - The Jackrabbit Project has been formed to develop an open source implementation of the Content Repository for Java Technology API (JCR), being specified within the Java Community Process as JSR-170. Day Software, the JSR-170 specification lead, has licensed an initial implementation of the JCR reference implementation for use as seed code for this project. JCR specifies an API for application developers (and application frameworks) to use for interaction with modern content repositories -- content management systems that provide content services such as versioning, transactions, indexing, workflow, etc.
      
• KnowledgeTree - KnowledgeTree Document Management System is an open source software system that provides a structured and secure environment for managing mission-critical organizational information.
  Web-Based Knowledge ManagementKnowledgeTree™ Document Management System (DMS) provides the functionality and architectural rigor you would expect in a million dollar enterprise application, but because its open source (released under the GPL), you can download it for free.
  Development excellenceThis DMS contains all of the following crucial components of a secure and efficient document management system:
  Central repository
  Workflow engine
  Search and indexing technology
  
      
• Magnolia - J2EE meets Usability
  Magnolia is the leading open source content management system (CMS) which has been built from scratch to support JSR 170, the standard API for java content repositories (JCR).
  Its main goal is ease of use for all parties involved in running a CMS.
  
  Magnolia is distributed as a a drop n deploy war file and as a double clickable binary installer. It includes everything you need to get you started with a standalone installation in less than 10 minutes. Magnolia runs on all common operating-systems (JDK 1.4.1 or later required). No additional software or databases are needed.
      
• MMBase - MMBase is a Web Content Management System with strong multi media features and advanced portal functionalities. MMBase has a large installed base in The Netherlands, and is used by major Dutch broadcasters, publishers, educational institutes, national and local governments. MMBase is written in Java, it is Open Source Software (MPL) and all standards used are as open as possible. The system can be used with all major operating systems, application servers and databases
      
• Open Harmonise - 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.
  The key features
  Rich metadata management and matching
  WebDAV
  Central management of publishable objects
  Publication structures not coupled to repository structure
  User management
  Rich Swing GUI
      
• Slide - Slide is a content repository which can serve as a basis for a content management system / framework and other purposes. It features:
  
  Full WebDAV Support
  Basic DeltaV WebDAV Versioning Support
  Support for a variety of backend systems for storing the content including different databases and file system storage
  Transactions and Locking for data integrity
  Flexible control over permissions at a per file level via support for the WebDAV ACL
  DASL support for any backend, extensible for using backends search capabilities for higher scalability and less latency
  Binding support
  Simple installation as .war deployment
  ready-to-run binary distribution for Tomcat
  A fully featured WebDAV client library and command line client
  
      
• SpaceMapper DataStore - 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).
  
  The documents are stored in conventional relational database (Postgresql, MySQL, IBM DB2, SAP DB) assuring that way the maximum advantages and reliability of these products. Being built on top of the Avalon Phoenix framework, it allows server components to be easily developed, deployed and shared. The documents are managed through a BEEP and/or XML-RPC interface using a subset of the SEP (Simple Exchange Profile) protocol.
  
      
• Xinco - The Core of Information and Document Management
  xinco DMS™ is a powerful Web-Service based Information and Document Management System (DMS) for files, text, URLs and contacts, featuring ACLs, version control, full text search and an FTP-like client.