AIX (1986) 13 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.

• 3.x

AT&T System V Unix (1991) 17 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

DEC OSF-1 (1991) 5 Unix

DEC OSF-1 was a version of UNIX from DEC built on the Mach kernel. It was first developed for MIPS based DECStations, and then ported to 64-bit DEC Alpha (AXP). It was later renamed to Digital Unix, and then again to True64 Unix.

• 1.x

FrameMaker (1990) 2 Publishing Unix MacOS Other

FrameMaker, originally from Frame Technology Corporation and later Adobe, is a professional document system for creating large, complex documents with highly structured layout. It was often accompanied by FrameReader.

• 2.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

Lotus 1-2-3 (1983) 81 Spreadsheet Unix

Lotus 1-2-3 was an early spreadsheet application available for MS-DOS. It became extremely popular in the late 1980s, displacing the former leader VisiCalc. Lotus had difficulties adapting 1-2-3 to the Windows environment, and was overtaken by Microsoft Excel. Spreadsheet functionality was also included in Lotus Symphony. Later versions were included in Lotus SmartSuite.

• 1.x (Unix)

Microsoft Word (1983) 116 Word Processor Unix

The Microsoft Word word processor was first introduced for MS-DOS in 1983. Its design made use of a mouse and WYSIWYG graphics. Its crude WYSIWYG/mouse support was a direct response to the Apple Lisa/Mac, and VisiCorp Visi On. Initially it competed against many popular word processors such as WordStar, Multimate, and WordPerfect. Word for DOS was never really successful.

• 5.x (UNIX)

NeXTStep (1987) 74 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.

• 2.x

Norton Utilities (1983) 64 Utility Unix

The Norton Utilities is a suite of disk and system utilities designed to enhance system performance and stability. It started off as a set of disk utilities written by Peter Norton, and later was sold by Symantec. It competed against Central Point PC Tools and the Mace Utilities. In 2003, Norton Utilities was merged with Norton SystemWorks, but later split back out.

• For System V

Powerchute (1990) 1 Unix

Powerchute is a utility for use with American Power Conversion Corporation (APC) battery backup power supplies.

• 1.x

Venix (1984) 7 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.

• 386 3.x