According to the latest stats from NetMarketShare, Windows 7 currently has a 61 per cent share of the global operating system market, Windows 8.1 accounts for 13 per cent and Windows 8 for three per cent. Windows XP, which launched in 2001 and is no longer supported by Microsoft, still accounts for almost 12 per cent.
http://www.telegraph.co.uk/technology/microsoft/windows/11769761/Windows-10-launch-live.html
Sales of Windows XP licenses to original equipment manufacturers (OEMs) ceased on June 30, 2008, but continued for netbooks until October 2010. Windows XP remained popular even after the release of newer versions, particularly due to the poorly received release of its successor Windows Vista. Vista's 2009 successor, Windows 7, only overtook XP in total market share at the end of 2011. Extended support for Windows XP ended on April 8, 2014, after which the operating system ceased receiving further support or security updates to most users.
https://en.wikipedia.org/wiki/Windows_XP
Windows XP Service Pack 3 (SP3) was released to manufacturing on April 21, 2008, and to the public via both the Microsoft Download Center and Windows Update on May 6, 2008.
https://en.wikipedia.org/wiki/Windows_XP
Microsoft began rolling out Windows 10 to customers on 29 July 2015. Here we round up all the news, reactions, and updates from the day. 1  Windows 10 launch: Microsoft releases new operating system.  Windows 10 review: a fresh Start.
http://www.telegraph.co.uk/technology/microsoft/windows/11769761/Windows-10-launch-live.html
According to market research company IDC, Windows owns 3.2 percent of the OS market share for smartphones, compared to 79.4 percent for Android and 16.4 percent for iOS. As a result, developers are reportedly finding it difficult to monetise their products.
http://www.telegraph.co.uk/technology/microsoft/windows/11769761/Windows-10-launch-live.html
Windows XP (stylised as Windowsxp; codenamed Whistler) is a personal computer operating system that was produced by Microsoft as part of the Windows NT family of operating systems. The operating system was released to manufacturing on August 24, 2001, and generally released for retail sale on October 25, 2001.
https://en.wikipedia.org/wiki/Windows_XP
At the time of publication, XP's retirement date was April 8, 2014. Microsoft no longer supports the operating system after that date. During its 12-year life span, Microsoft provided support for XP longer it did for than the OS's predecessor, Windows NT.
http://smallbusiness.chron.com/did-windows-xp-windows-7-come-first-63610.html
Windows 7 Features. Over time, Microsoft released additional operating systems, such as Vista and Windows 7. While Windows 7 and XP share common user-interface features, they differ in key areas. Windows 7's taskbar, for instance, enables you to pin favorites apps there for easy access.
http://smallbusiness.chron.com/did-windows-xp-windows-7-come-first-63610.html
Welcome to The Telegraph's live blog on the launch of Windows 10. As Microsoft's operating system update begins rolling out around the world, we'll be bringing you the latest news, reactions from users, and updates on how the internet is holding up under the massive strain.
http://www.telegraph.co.uk/technology/microsoft/windows/11769761/Windows-10-launch-live.html
You are not alone if you still use Windows XP, an operating system that came before Windows 7. W3Schools.com's log files report that over 19 percent of all site visitors used Windows XP as their operating system in February of 2013.
http://smallbusiness.chron.com/did-windows-xp-windows-7-come-first-63610.html
when did windows xp release
Windows XP released in 2001.