Microsoft Windows Small Business Server (19)

1995 - 2000 8

1995-09	Microsoft Windows BackOffice 1.0
1996-01	Microsoft Windows BackOffice 1.5
1996-04	Microsoft Windows BackOffice 2.0
1996-12	Microsoft Windows BackOffice 2.5
1997-12	Microsoft Windows BackOffice 4.0
1997-12	Microsoft Windows BackOffice Small Business Server 4.0
1999-07	Microsoft Windows BackOffice Server 4.5
1999-07	Microsoft Windows BackOffice Small Business Server 4.5

2000 - 2005 3

2001-04	Microsoft Windows Small Business Server 2000
2001-04	Microsoft Windows BackOffice Server 2000
2003-12	Microsoft Windows Small Business Server 2003

2005 - 2010 2

2006-09	Microsoft Windows Small Business Server 2003 R2
2008-08	Microsoft Windows Small Business Server 2008

2010 - 2015 4

2011-03	Microsoft Windows Small Business Server 2011 Standard
2011-06	Microsoft Windows Small Business Server 2011 Essentials
2013-01	Microsoft Windows Server 2012 Essentials
2013-11	Microsoft Windows Server 2012 R2 Essentials

2015 - 2020 2

2016-10	Microsoft Windows Server Essentials 2016
2018-11	Microsoft Windows Server Essentials 2019

Families

Microsoft Windows Hyper-V

Microsoft Windows 12

Microsoft Windows Home Server

Microsoft Windows Phone

Microsoft Windows 11 for Xbox