Microsoft OS and its dev-language C Windows XP sales beginning on October 25, 2001. Windows Vista Windows 7 It was released to manufacturing on July 22, 2009, and became generally available on October 22, 2009 Windows 8 / windows 8.1 Windows 8.1 retail sale on October 17, 2013 Windows 8 and generally to retail on October 26, 2012 Windows 10 released for the general public on July 29, 2015 Windows 11 was released to the public on October 5, 2021 C programming language C programming language
