A/UX (1988) 6 Unix

Apple A/UX is an early port of Unix to Apple's 68k based Macintosh platform. It features a full Unix system with a Mac OS GUI and the ability to run classic Mac OS applications.

• 1.x

AIX (1986) 27 Unix

AIX (Advanced Interactive eXecutive) is a Unix port originally developed by IBM and released in 1986 for the IBM RT 6150, a RISC based desktop workstation. It was later ported to the RS/6000, POWER, and PowerPC platforms as well as IBM System i, System/370 mainframes, and the PS/2 personal computers, and the Apple Network Server.

• AIX PS/2
• 3.x
• 4.1.x
• 4.3.x
• 5.1

AT&T System V Unix (1991) 31 Unix

AT&T UNIX System V ("System Five"), first released in 1983, is significant as it was one of the first commercial versions of the Unix operating system. It was the result of much collaboration between vendors and became the core basis for many other operating systems including Xenix, AIX, UnixWare, Solaris, and HP-UX.

• 2.x

Corel Linux (1999) 5 Linux

Corel Linux was a short-lived commercial Linux distribution that attempted to compete directly against Microsoft Windows 98/2000.

• 1.x

DELL Unix (1992) 11 Unix

Dell Unix, first introduced in 1989, was an adaptation of AT&T Unix intended for Dell hardware. Although Dell Unix received much praise, Dell found they could not reasonably support it on non-Dell hardware, as many customers wanted, and in 1993 discontinued it.

• 4.0

Digital UNIX (1995) 3 Unix

Formerly OSF/1, in 1994 after the Open Software Foundation (run by DEC, IBM, and HP) ceased involvement, Digital Equipment Corporation renamed the OS to "Digital UNIX". In 1998, DEC was bought out by Compaq and the product was again renamed, to Tru64 UNIX.

• 3.2B
• 3.2G
• 4.0B
• 4.0D
• 4.0E

Firefox (2005) 2 Web Browser Windows Linux Mac OS X

Firefox is a web browser based on the open source Mozilla web browser. It was intended to be lighter weight and faster than Mozilla, separating the e-mail client in to the new Thunderbird product. At release, it implemented better support for web standards than Microsoft Internet Explorer. Firefox included features such as tabbed browsing and support for add-ons.

• 1.x
• 2.x
• 3.x

FoxBASE (1987) 3 Database DOS Unix MacOS

FoxBASE, a relational database from Fox Software, started off in 1984 as a clone of dBase II that boasted many speed improvements. FoxBASE+ adds feature parity and compatibility with dBase III Plus. It was later aquired by Microsoft and became FoxPro

• Plus 1.x
• Plus 2.x

FoxPro (1990) 90 DOS Windows Unix MacOS

FoxPro, originally from Fox Software and later Microsoft, is a relational database that clones the functionality of dBase IV, but offers vast speed improvements. It was based on Fox Software's FoxBASE (a dBASE II clone) and FoxBASE+ (a dBase III Plus clone). It adds a new mac-like user interface that was first developed for FoxBASE+/Mac.

• 2.6

Gentus Linux (2000) 1 Linux

Gentus Linux is a distribution produced by ABIT, enhanced for use with their line of motherboards. (Enhanced IDE drivers, etc) ABIT's Gentus Linux was notorious for failing to comply with the GPL.

• 3.x

HP-UX (1992) 3 Unix

HP-UX is a Unix variant based off of System III, later System V Unix. Released in 1984, the initial version of HP-UX supported the Motorola 68k processor family, specifically the HP 9807A, the "HP Integral PC". This OS is still updated, with its latest being version 11i. Platforms that HP-UX have ran on were the Motorola 68k, RISC, HP FOCUS, and the Itanium family of Intel processors. HP-UX was the first UNIX to provide access control lists (acls), logical volumes, features that are currently supported by newer mainstream Operating Systems. HP-UX versions before 11.0 are not deemed as being Y2k-compliant by HP.

• 9
• 10

Informix (1983) 0 Database Unix

Informix is a powerful high-speed high-end multi-user relational database program originally developed for Unix and Xenix in the C programming language. It includes form and report building tools.

• 3.x

Intel Unix System V (1990) 2 Unix

Intel Unix System V was a rather uncommon Unix variant developed and distributed by Intel, for IBM PC compatible hardware. It was considered "plain vanilla" compared to other distributions, adding little beyond AT&T's codebase.

• 2.x

Internet Explorer (1995) 96 Web Browser Windows Unix MacOS Mac OS X

Microsoft Internet Explorer is a web browser application created by Microsoft primarily for Microsoft Windows. It was initially based on Spyglass Mosaic. At various points, Internet Explorer was also available for MacOS, Solaris, and HP-UX.

• 4
• 5

IRIX (1998) 23 Unix

IRIX was a operating system created by SGI (Silicon Graphics Inc) that was based off of System V Unix. In addition, this OS had additional BSD elements. It's initial release was in 1988 and was designed to on MIPS processors. IRIX machines were typically used for visual effects in the entertainment industry and in the scientific community for several years after the fall of Amiga in the early 90s.

• 3.x
• 4.x
• 6.5
• 6.5.9
• Patches
• 6.5.21
• 6.5.22

Linux Kernel (1991) 3 Linux

Linux, originally created by the Finnish programmer Linus Torvalds, is a Unix-like operating system loosely inspired by Minix. The pivotal difference, however, was how it was licensed. Unlike Unix operating systems that remained expensive and proprietary, Linux and its source code were licensed for free distribution, with the provision that all changes or additions to the source code must also be released for free.

• 0.x

Mandrake Linux (1999) 9 Linux

Mandrake Linux was a highly polished and easy to use Linux distribution, originally based on Red Hat Linux with KDE. In 2005, Mandrake Linux became Mandriva.

• 6.5
• 7.0
• 9.0 PowerPack

NeXTStep (1987) 46 Unix

NeXTSTEP, from NeXT Computers headed by Steve Jobs, is a Unix based operating system designed to run on m68K NeXT workstations. It later became the basis for OS X, with APIs and concepts preserved today.

• 0.x
• 1.x
• 2.x
• 3.x
• 4.x

PC/IX (1984) 9 Unix

Interactive UNIX, also known as PC/IX, and 386/ix were UNIX derivitives created for the IBM PC in the early 1980's. PC/IX was the first UNIX sold directly from IBM, but not the first UNIX sold for the IBM PC. (Venix/86 was the first.) The original PC/IX software sold was on 19 floppy disks and sold for 900 dollars. In 1985, 386/ix was introduced, later named Interactive UNIX. The last version released was 4.1.1 in July 1998 and was supported up until 2006.

• 1.0
• 2.x
• 4.x

QNX (1982) 9 Unix

QNX is a compact Unix-like real-time operating system that was originally designed for the IBM PC and later used in embedded devices. The versions here are for IBM PC compatibles.

• 1.2
• 1989 Demo
• 2.2
• 4.2
• 1.44mb Demo

Red Hat Linux (1997) 14 Linux

Red Hat Linux was a popular early Linux distribution, that was made available as a boxed set available in stores.

• 5.0

Tru64 UNIX (1999) 2 Unix

Tru64, formerly Digital UNIX, formerly OSF/1 was DEC's UNIX product for their line of Alpha based systems. After DEC's acquisition by Compaq, it was renamed to Tru64. DEC previously had sold a BSD derivative named Ultrix for Vax and MIPS based systems. Their new UNIX on Alpha was meant to counter AT&T and Sun's SVR4 Unix. Tru64 / DIGITAL UNIX / OSF/1 is somewhat interesting in that it used portions of the Mach microkernel and BSD kernel and userland in a manner not entirely unlike NeXTSTEP or Mac OS X. Like OS X, Tru64 itself is not a microkernel system but uses Mach code in its kernel to implement threading and scheduling and possibly other features.

• 5.0
• 5.1B

Ultrix (1989) 0 Unix

ULTRIX was a UNIX clone designed by DEC for the PDP-11 and VAX.

• 3

UnixWare (1992) 0 Unix

Unixware is a variant of Unix from Novell that incorporated its Netware features. It was later absorbed and merged with SCO Unix, which took on the Unixware name.

• 1.x
• 2.x

Venix (1984) 0 Unix

First unveiled in 1983 as Venix/86 for 8088/8086 CPUs, Venix is a compact lightweight multi-user multi-tasking operating system for IBM PC compatible computers. It was created by VenturCom and published through Unisource. Venix is notable for being the first available adaptation of UNIX for IBM PCs, beating IBM to the UNIX market. It was initially based off of UNIX Version 7.

• 86 2.x
• 386 3.x