Liferay is free and open source enterprise portal framework, used for enabling corporate Extranet and Intranet. Liferay can be also used as a web application framework and/or content management framework. It comes with all the features that a website needs to offer to its users. It is made of many functional units, which are known as portlels. Liferay is build in Java and offers support for variety of extensions and plug-ins for many programming languages.