KaiNet 

Net is an extensible networking library that is easy to get running. It is ideal for hobbiest programmers and rapid development as all of the networking features are highly configurable, yet work straight out... More information

Provides easy to use networking. Send and recieve any c# object or file in as little as six lines. Works straight out-of-the-box. Many ways to configure and get more granular control making it easy to use in... More information