is a family of operating environments and operating systems dedicated to personal computers, workstations, servers and smartphones.
Microsoft Windows is proprietary software of Microsoft Corporation which makes it available for a fee only. In particular, Microsoft Corporation currently only sells operating systems belonging to the Microsoft Windows family: Windows 8 for personal computers and workstations, Windows Server 2008 R2 and Windows Home Server 2011 for servers, Windows Phone for smartphones, and Windows CE for Pocket PC and Portable Media Centers.
Microsoft Corporation currently with Microsoft Windows holds the majority of the operating system market: as of January 2013, Microsoft Windows’ market share in this sector was 80.47%