ARFNET

Operating System Collection

MS-DOS

MS-DOS 1.25

MS-DOS 2.0

MS-DOS 3.0

MS-DOS 4.0

MS-DOS 5.0

MS-DOS 6.22

MS-DOS 7.1

Microsoft Windows

Windows 1.01

Windows 2.03

Windows 3.0

Windows 3.1

Windows for Workgroups 3.11

Windows NT 3.1

Windows NT 3.51

Windows NT 4.0

Windows 95 OSR2

Windows 98 Second Edition

Windows Millenium Edition

Windows 2000

Windows XP

Windows 7

Windows 8

Windows 8.1

Windows 10

Windows 11

IBM/Microsoft OS/2

OS/2 1.3

OS/2 2.1

OS/2 3.0

OS/2 4.0 Warp

Unix

AT&T Unix System V SRV4

AT&T Unix System V SRV4 2.0

Berkeley Software Distribution 4.3BSD

FreeBSD 1.0.7

BSDOS 4.2

GNU/Linux

Canonical Ubuntu 4.10

Debian 2.0

Mandrake 7.0

Source:

• WinWorld (MS-DOS, Windows 1.01 to 2000, FreeBSD 1.0.7, AT&T Unix System V SRV4 2.0, OS/2)
• malwat.ch (Windows XP to 10)
• a anonymous dude for the leaked Windows 11 torrent
• archive.org (Unix 4.3BSD)
• vetusware.com (AT&T Unix System V SRV4)