Apache Cocoon

Apache Cocoon, usually abbreviated as Cocoon, is a web application framework built around the concepts of Pipeline, separation of concerns, and component-based web development. The framework focuses on XML and XSLT publishing and is built using the Java programming language. Cocoon's use of XML is intended to improve compatibility of publishing formats, such as HTML and PDF. The content management systems Apache Lenya and Daisy have been created on top of the framework. Cocoon is also commonly used as a data warehousing ETL tool or as middleware for transporting data between systems.