Alfresco is the largest open source content management company in the world with over 3.5 million downloads. It provides a content management platform, records management, web content services, and enterprise collaboration features. Alfresco customers report an average 10 month payback period and over 50% return on investment within three years. Alfresco 4 introduced powerful social features like content liking and following, favorites, and notifications to integrate enterprise content management with social media and collaboration.