Liferay Portal is Open source Enterprise that comes with rich set of built in Features. It has powerful content management systems, document management system and other powerful features. It is easy to deploy and customize which makes it first choice among other open source portals. Though it is based on Java, it supports other languages. #Liferay - Scalsys Technologies Offers : - SSO - Single Sign On - Roles & Permission - Integrated Content Workflow - Multi Language Support - Micro Sites - Third Party Integration - SOA - Service Oriented Architecture - Content Management System - Document Management System - Collaboration Tools -like Forum, Blogs etc..