Google OS is short for Google Operation System. Google OS is what runs on anything Chrome Bases, Chrome Books, Chrome Boxes, etc. It's simply Google Chrome turned in to an Operating System with the ability to add apps, extensions, shortcuts, etc. What makes these devices so popular? Their cost. You can get a great Chromebook which will do just about everything a traditional Windows PC will do for only $200. You see the difference is, the Operating System is Mobile so you cannot install your typical program such as executables that come on a CD, DVD, or that you download from the internet. They aren't meant for high graphic video editing, or HI RES Game Play, nor are they designed for large scale corporations who require a Windows Domain of which also require a list of specific programs that have not been converted to Web-Based Apps yet. Now let me say, everyday I am seeing an Application come out with a Web-Based Beta App or URL.