Real-time communication and collaboration in the enterprise represents a significant shift in how employees, partners and customers interact and collaborate to drive organizational performance. The growth and acceptance of so-called “Enterprise 2.0” platforms and applications promise to break down closed communication and collaboration loops by moving discussions and data access from email, content management and rigid process applications to activity streams, wikis and API-based data access. This report looks at the history of this transition, the major players involved, opportunity and challenges for vendors in the space, and profiles the efforts of major enterprise collaboration tools to add real-time tools.