Emerging multimedia applications require real-time information delivery over computer networks. Traditionally, real-time communications have been using specific transport protocols resting multi-platform support and hindering service maintenance. But the latest transport protocols for real-time web applications enable to create low-latency services without requiring native applications and easily going through firewalls and proxies. On the last years, several frameworks offering real-time web communication have appeared. These frameworks implements different transport protocols as fall-back measure to ensure that the connection will be established independently of the technology available on client-side. As a first part of this project, some of these frameworks have been reviewed and compared given the devices targeted in this project: Windows Phone 8 and Windows 8. The second part of this project consist in developing a real-time service using a given real-time framework and applying the most recent tendencies on Software architecture and code recycling. Finally the solution has been tested and evaluated in two environments: on local networks and on Internet using on cloud services.