S.O By V25288 Period: Jan 1, 1985 to Jan 1, 1992 Windows 1.0-2.0 Period: Nov 20, 1985 to Jan 1, 2024 Windows Period: Jan 1, 1990 to Jan 1, 1994 Windows 3.0-3.1 Jan 1, 1993 Desbian Jan 1, 1994 red hat Period: Aug 1, 1995 to Jan 1, 1998 Windows 95 Jan 1, 1997 Cent OS Period: Jun 1, 1998 to Dec 31, 1999 Windows 98 Mar 16, 1999 Mac OS X Server 1.0 Period: Feb 1, 2000 to Dec 31, 2000 Windows 2000 Sep 13, 2000 Mac OS X Public Beta Mar 24, 2001 Mac OS X 10.0 Sep 25, 2001 Mac OS X 10.1 Period: Oct 1, 2001 to Dec 31, 2001 Windows XP Aug 24, 2002 Mac OS X 10.2 Oct 24, 2003 Mac OS X 10.3 Jan 1, 2004 Knoppix Jan 4, 2004 UBUNTU Jan 1, 2005 Fedora Jan 3, 2005 Kubuntu Jan 3, 2005 Dreamlinux Apr 29, 2005 Mac OS X 10.4 Jan 1, 2006 Oracle May 2, 2006 Xubuntu Period: Nov 1, 2006 to Sep 30, 2009 Windows Vista Oct 26, 2007 Mac OS X 10.5 Jan 4, 2009 Zentyal Aug 28, 2009 Mac OS X 10.6 Period: Oct 22, 2009 to Dec 31, 2010 Windows 7 Jan 1, 2010 Edubuntu Jan 2, 2010 Fuduntu Jul 20, 2011 Mac OS X 10.7 Jul 25, 2012 OS X 10.8 Oct 22, 2013 OS X 10.9 Oct 16, 2014 OS X 10.10 Period: Jul 29, 2015 to Dec 31, 2021 Windows 10 Sep 30, 2015 OS X 10.11 Oct 20, 2016 macOS 10.12 Oct 25, 2017 macOS 10.13 Oct 24, 2018 macOS 10.14 Oct 7, 2019 macOS 10.15 Nov 12, 2020 macOS 11 Period: Oct 5, 2021 to Jan 1, 2024 Windows 11 Oct 25, 2021 macOS 12 Oct 24, 2022 macOS 13 Sep 26, 2023 macOS 14