This is the home of The XSockets Project (codename xsock)
Its mission is to create Super Sockets - a unified and eXtensible API for point-to-point communication between programs and/or devices.
Although this website is not finished yet, it contains an introduction to the project and also its status and roadmap. You can also look at the download section or see the source code online. The docs include only a basic how-to, but much more will come in later on. You can also have a look at the SF.net XSockets project page for more "technical" details.
Were you looking for some other project named xsock or similar? Please see the links page.