Nama Sistem Operasi dan tahun pengembangannya

1 Nextstep                                   NeXT 1985
2 OPENSTE                               NeXT dan  Sun Microsystems 1993
3 Mac OS 8                                Apple Inc. 1997
4 Mac OS 8.1                             Apple Inc. 1998
5 Mac OS 8.6                             Apple Inc. 1999
6 Mac OS 9                                Apple Inc. 1999
7 Mac OS X Hera                      Apple Inc. 1999
8 Mac OS X Kodiak                  Apple Inc. 2000
9 Mac OS X Cheetah                Apple Inc. 2001
10 Mac OS X Puma                  Apple Inc. 2001
11 Mac OS X Jaguar                 Apple Inc. 2002
12 Mac OS X Panther               Apple Inc. 2003
13 Mac OS X Tiger                   Apple Inc. 2005
14 Mac OS X Leopard              Apple Inc. 2007
15 Mac OS X Snow Leopard    Apple Inc. 2009
16 MS-DOS                              Microsoft Inc. 1980
17 Windows 1.0                        Microsoft Inc. 1985
18 Windows 2.0                        Microsoft Inc. 1988
19 Windows 3.0                        Microsoft Inc. 1990
20 Windows 3.1                        Microsoft Inc. 1992
21 Windows 95                         Microsoft Inc. 1995
22 Windows 98                         Microsoft Inc. 1998
23 Windows 98 SE                   Microsoft Inc. 1999
24 Windows Me                       Microsoft Inc. 2000
25 Windows 2000                    Microsoft Inc. 2000
26 Windows NT 3.5                 Microsoft Inc. 1994
27 Windows NT 3.5.1              Microsoft Inc. 1995
28 Windows NT 4.0                 Microsoft Inc. 1996
29 Windows XP                       Microsoft Inc. 2001
30 Windows Server 2003         Microsoft Inc. 2003
31 Windows Vista                    Microsoft Inc. 2006
32 Windows Home Server       Microsoft Inc. 2007
33 Windows Server 2008         Microsoft Inc. 2008
34 Windows 7                          Microsoft Inc. 2009
35 Debian 5.0 “Lenny”            Debian Project 1993
36 Fedora 11                            Fedora Project 2003
37 Gentoo Linux 2008.0          Gentoo Foundation 2008
38 Red Hat Linux                    Red Hat 1995
39 Mandriva Linux 2009.1      Mandriva 2009
40 openSUSE                           openSUSE Project 1994
41 Slax 6                                  Tomáš Matejícek 2008
42 Ubuntu                                Canonical Ltd. / Ubuntu Foundation 2004
43 Solaris 1.x                           Sun Microsystems 1991
44 Solaris 2.0                           Sun Microsystems 1992
45 Solaris 2.1                           Sun Microsystems 1993
46 Solaris 2.5                           Sun Microsystems 1995
47 Solaris 7                              Sun Microsystems 1998
48 Solaris 8                              Sun Microsystems 2000
49 Solaris 9                              Sun Microsystems 2003
50 Solaris 10                            Sun Microsystems 2005
51 Unix AT&T                         Bell Labs 1969
52 Plan 9 from Bell Labs         Bell Labs 1992
53 Google Chrome OS            Google Inc. 2009
54 Windows 8                      Microsoft inc.     2012