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Windows XP is an operating system (OS) developed and exclusively distributed by Microsoft Corporation and targeted to owners of personal computers, laptops and media centers. The "XP" stands for eXPerience.
Windows XP was released to manufacturers in August 2001 and publicly released in October 2001. Because of its installed user base, it is the second most popular Windows version.
During the early 2000s, Windows XP was Microsoft’s most important OS release since Windows 95. Built on the improved stability of the Windows 2000 kernel, Windows XP offers a number of Windows system upgrades, including visual user interface quality and multiple features for streamlining multimedia, connectivity, and device management.
The three main Windows XP versions are (were) as follows: