Liferay Portal is a free and open source enterprise portal software product. Distributed under the GNU Lesser General Public License and optional commercial license, Liferay has been declared "Best Open Source Portal" by InfoWorld in 2007. It is primarily used to power corporate intranets and extranets. Written in Java, Liferay Portal is a web platform with features commonly required for the development of websites and portals. Liferay includes a built-in web content management system allowing users to build websites and portals as an assembly of themes, pages, portlets/gadgets and a common navigation. Liferay is sometimes described as a content management framework or a web application framework. Liferays support for plugins extends into multiple programming languages, including support for PHP and Ruby portlets. Liferays programming interface is accessible to users with no programming skills for the basic website installation and administration.