Extreme Operating System

I remember reading something about it a year or so ago. Although I don't have any experience with it, here's a site where you can get lots of info as well as support: http://www.saysecurity.com/xos.html

"The XOS operating system was designed and developed by SAY Security Group USA in 2005. It was written specifically to meet the needs and solve some of the problems of the Security Industry and the DVR community. Past DVR systems have run on Windows 98, 2000 or XP. The XOS was written to improve security, speed and reliability of PC Based surveillance systems."

I hope this helps. Good Luck.