This chart shows the lifecycle of major enterprise operating systems. The end of life is marked by the end of official security support. The chart will be updated every now and then.
| 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
| Solaris 8 + Vintage Patch Service Feb, 2000 – Mar 31, 2012 |
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| Windows 2000 Feb 17, 2000 – Jul 13, 2010 |
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| Red Hat Enterprise Linux 2.1 May 17, 2001 – May 31, 2009 |
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| Windows XP Oct 25, 2001 – Apr 8, 2014 |
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| Solaris 9 May 18, 2002 – Oct 30, 2011 |
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| FreeBSD 5 Jan 19, 2003 – May 31, 2008 |
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| Windows Server 2003 Apr 24, 2003 – Jul 14, 2015 |
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| Red Hat Enterprise Linux 3 Oct 23, 2003 – Oct 31, 2013 |
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| SUSE Linux Enterprise Server 9 Nov 8, 2004 – Jul 30, 2011 |
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| Solaris 10 Jan 31, 2005 – +2.5yrs |
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| Red Hat Enterprise Linux 4 Feb 15, 2005 – Feb 28, 2015 |
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| Debian 3.1 (Sarge) Jun 6, 2005 – Mar 31, 2008 |
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| FreeBSD 6 Nov 4, 2005 – Nov 30, 2010 |
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| Ubuntu 6.06LTS (Dapper Drake) Jun 1, 2006 – Jun 2011 |
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| SUSE Linux Enterprise Server 10 Jul 17, 2006 – Jul 31, 2013 |
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| Windows Vista Nov 6, 2006 – Apr 10, 2017 |
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| Red Hat Enterprise Linux 5 14 Mar, 2007 – 31 Mar, 2017 |
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| Debian 4.0 (Etch) Apr 8, 2007 – Feb 14, 2010 |
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| Windows Server 2008 Feb 4, 2008 – Jul 10, 2018 |
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| FreeBSD 7 Feb 27 2008 – +2yrs |
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| Ubuntu 8.04LTS (Hardy Heron) Apr 24, 2008 – Apr 2013 |
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| Debian 5.0 (Lenny) Feb 14, 2009 – Late 2011 (Next+1yr) |
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| SUSE Linux Enterprise Server 11 March 24, 2009 – March 31, 2016 |
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| Windows 7 October 23rd, 2009 – Jan 14, 2020 |
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| FreeBSD 8 November 25, 2009 – +2yrs |
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| Ubuntu 10.04LTS (Lucid Lynx) Apr 24, 2010 – Apr 2015 |
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| Red Hat Enterprise Linux 6 Oct 26, 2010 – 2020 |
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| Debian 6 (Squeeze) Late 2010 – 2013 (Next+1yr) |
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| Solaris 11 (tba.) 2011 – ≥2019 |
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| Ubuntu 12.04LTS (tba.) Apr, 2012 – Apr 2017 |
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| Debian 7 (Wheezy) 2012 – 2015 (Next+1yr) |
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| SUSE Linux Enterprise Server 12 (tba.) 2012 – 2019 |
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| Windows Server / Windows 8 (tba.) 2012 – ≥2022 |
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