Tools for multiplayer online games. Similar to DirectPlay, but LGPL and cross-platform. http://msdn.microsoft.com/en-us/library/windows/desktop/bb153243%28v=vs.85%29.aspx
Features:
- lobby
- chat
- users and user groups
- client-server or peer-to-peer
- sessions
- easy to synchronize game entities
- TCP, UDP, HTTP, websockets