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Technologies
Users
Years
Technologies in 2021
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Operating Systems in 2021
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AmigaOS
(since 1985) 3
Apple DOS
(since 1980) 1
Arch Linux
(since 2002) 7
BeOS
(since 1997) 1
Cleese
(since 2003) 4
Commodore DOS
(since 1981) 6
CP/M
(since 1981) 2
Debian
(since 1995) 28
Fedora
(since 2000) 11
FreeBSD
(since 1993) 19
Gentoo Linux
(since 2004) 1
GEOS
(since 1986) 1
Haiku
(since 2009) 2
IBM i
(since 1982) 1
Linux
(since 1992) 88
Mac OS ("Classic")
(since 1984) 4
Mac OS X
(since 1996) 54
Mac OS X v10.1 (Puma)
(since 2001) 1
Mac OS X v10.4 (Tiger)
(since 1996) 6
Mac OS X v10.5 (Leopard)
(since 2006) 13
Mac OS X v10.6 (Snow Leopard)
(since 2009) 42
Mac OS X v10.7 (Lion)
(since 2011) 10
Microsoft Windows
(since 1988) 32
MS-DOS
(since 1982) 24
NetBSD
(since 2000) 2
NeXTSTEP
(since 1991) 1
OpenBSD
(since 1998) 5
OS/2
(since 1989) 4
Red Hat Enterprise Linux
(since 1999) 9
Red Hat Linux
(since 1996) 6
RISC OS
(since 1988) 2
Slackware
(since 1993) 8
Solaris
(since 1995) 8
SunOS
(since 1983) 3
Ubuntu
(since 2003) 82
VM
(since 1987) 1
VMS
(since 1980) 1
Windows 2000
(since 2000) 3
Windows 3.0
(since 1991) 2
Windows 3.1
(since 1988) 12
Windows 7
(since 2008) 44
Windows 95
(since 1994) 6
Windows 98
(since 1997) 5
Windows CE
(since 1999) 1
Windows Me
(since 1999) 4
Windows NT
(since 1994) 3
Windows NT 4.0
(since 1996) 2
Windows Vista
(since 2006) 14
Windows XP
(since 1998) 38