Yammer

Yammer is a best-in-class Enterprise Social Network that brings together employees, content, conversations, and business data in a single location. Built for the enterprise and loved by users, Yammer empowers employees to be more productive by enabling them to collaborate in real-time across departments, geographies, and business applications. It is a new way of working that fosters team collaboration, empowers employees, promotes organizational connectedness and drives business agility. With its Premium model customers can see the value of Yammer before upgrading to the premium offering which includes additional administrative and security controls, integration with other applications, priority customer support, and customer engagement services. More than 7 million users, including employees from 85 percent of the Fortune 500, have adopted Yammer's Software-as-a-Service solution. Founded in 2008, Yammer is now part of the Microsoft Office Division.