Hippo CMS integrates or uses the following open source components.

Apache projects:

• Cocoon (http://cocoon.apache.org)
• Slide (http://jakarta.apache.org/slide)
• Apache Webserver (http://httpd.apache.org)
• Ant (http://ant.apache.org/)
• Avalon (http://avalon.apache.org)
• Lucene (http://jakarta.apache.org/lucene)
• Maven (http://maven.apache.org/)
• Xerces (http://xml.apache.org/xerces2-j/index.html)
• Xalan (http://xml.apache.org/xalan-j/index.html)
• FOP (http://xml.apache.org/fop/index.html)
• Batik (http://xml.apache.org/batik/index.html)

OpenSymphony projects:

• OpenSymphony OSWorkflow (http://www.opensymphony.com/osworkflow/)

Mortbay projects:

• Jetty (http://www.mortbay.org/jetty/index.html)

Tanuki Software projects:

• Wrapper (http://wrapper.tanukisoftware.org/)

Others

Outside the core there are connections available with Hippo CMS for the following open source components:

• Xinha (http://xinha.python-hosting.com)
• MySQL (http://www.mysql.com)
• PostgreSQL (http://www.postgresql.org)
• OpenOffice (http://www.openoffice.org)

There are also some commercial software products that have connectors in Hippo CMS:

• X-Hive (http://www.x-hive.com)
• Xopus (http://www.xopus.com)
• Oracle (http://www.oracle.com)

Thanks

Many thanks go out to all the developers in the open source projects listed above, and the ones we might have missed..!