This article [1] lists a couple of other "cloud OS" systems. OSv and mirage [2] seem to be the two most promising ones right now. 1: http://www.linux.com/news/

This article [1] lists a couple of other "cloud OS" systems. OSv and mirage [2] seem to be the two most promising ones right now. 1: http://www.linux.com/news/enterprise/cloud-computing/751156-are-cloud-operating-systems-the-next-big-thing- http://www.linux.com/news/enterprise/cloud-computing/751156-... 2: http://www.openmirage.org/ http://www.openmirage.org/