Did you know that Microsoft started with a *NIX Operating System prior to DOS? Yes! You had heard it right. They first came with Xenix, a Unix variant prior to the launch of MS-DOS, the operating system that we were taught of during my elementary school days. Then came the many versions of Windows, from the first one that I had tried, which is 3.1 (then came Windows 3.11 with Networking Capabilities), then the launched of Windows 95, that changed how people perceived computing, in general.
Now, that I am using Windows XP, which will soon be outdated by Windows Vista (come 2006), news has been circulating in the WWW about Microsoft’s new operating system (OS) code-named: Singularity.
Technical specification of the new OS can be read at http://research.microsoft.com/os/singularity/