From OpenNetGame

OpenNetGame

OpenNetGame hopes to become a collection of libraries aimed at facilitating the creation of online and networked multi-player, multi-platform games. It aims to simplify the effort of adding multiplayer aspects to games. Currently there are two components that assist with this. They are:

• NetGameTrack - A Server and client library designed to list available servers on the local network or internet.
• NetGameConnect - Game networking

This collection of libraries are designed to be small, efficient and multiplatform. Currently, only Windows and Linux are supported but may gain additional platform support in the future. You should find enough information here to learn how to install the SDK and implement OpenNetGame libraries into your project.