Alfresco is a Free/Libre enterprise content management system for Microsoft Windows and Unix-like operating systems.
Alfresco comes in two flavours.
Alfresco Community Edition is free software, LGPL licensed open source and open standards.
Alfresco Enterprise Edition is commercially & proprietary licensed open source, open standards and enterprise scale. Its design is geared towards users who require a high degree of modularity and scalable performance.
Alfresco includes a content repository, an out-of-the-box web portal framework for managing and using standard portal content, a CIFS interface that provides file system compatibility on Microsoft Windows and Unix-like operating systems, a web content management system capable of virtualizing webapps and static sites via Apache Tomcat, Lucene indexing, and Activity workflow.
The Alfresco system is developed using Java technology.