Microsoft Windows is a series of operating systems developed and distributed by Microsoft and aimed at both personal and company usage.
The first version was released in 1985 as an GUI (Graphical User Interface) extension to MS-DOS and quickly overtook Mac OS in terms of market share.
Today Windows still dominates the Personal Computer market with a share of over 80%. The latest version of the Operating System is Windows 8 which was designed for both desktop computers and mobile devices.
Windows File Extensions: