MS-DOS (1981) 1004 DOS

Originally 86-DOS, written by Tim Paterson of Seattle Computer Products, DOS was a rough clone of CP/M for 8086 based hardware. Microsoft purchased it and licensed it to IBM for use with Microsoft's IBM PC language products. In 1982, Microsoft began licensing DOS to other OEMs that ported it to their custom x86 hardware and IBM PC clones.

• 1.x
• 2.x
• 3.00
• 3.10
• 3.20
• 3.21
• 3.30
• 3.31
• 4.0x
• 5.0
• 6.0
• 6.20
• 6.21
• 6.22
• 7.1 (CDU)

Microsoft Visual Basic (1991) 606 DOS

First released in 1991, Microsoft Visual Basic was a programming environment where one could build an application by visually creating the user interface first, and then adding code. In contrast, even the smallest Visual Basic basic programs could take reams of program code to write in C or C++. Visual Basic was extremely popular for business application programming. The language itself was an interpreted BASIC dialect, however speed was maintained through the use of reusable compiled libraries (DLLs and VBX controls). These however, limited application development to Microsoft Windows.

• 1.0 for DOS

Microsoft Windows Boot Disk (1995) 284 DOS

These disks are original boot floppy disk media for use with Microsoft Windows CD-ROMs. Not all Windows 9x/ME CDs are bootable, not all CDs included boot disks, and DOS will not see a CD-ROM drive unless a driver is loaded. OEMs were expected to provide compatible CD-ROM with the boot media provided with their systems. However towards the very late 90s, most vendors standardized on IDE/ATAPI CD-ROM hardware and the use of the OEM Adaption Kit (OAK) driver. If your CD drive is not IDE compatible (such as an MKE or Panasonic interface) you must manually add your own driver. Note: you can use the Windows 98 boot disk with Windows 95 to make things easier. If you have any UNTOUCHED OEM boot disks with different drivers, please submit them.

• 95 RTM
• 95 OSR2.x
• 98 FE
• 98 SE
• ME

PC-DOS (1981) 124 DOS

IBM PC-DOS was an IBM branded version of MS-DOS licensed from Microsoft for use on the IBM PC system. Versions of PC-DOS paralleled that of MS-DOS up until version 6.1, where PC-DOS was independently maintained by IBM up until 7.1, the last version. Although not the only OS available for the IBM PC when it came out, it quickly became popular due to its low cost in comparison to the others. Its direct competitors on the PC at the time were CP/M-86 and UCSD p-System. The major differences between PC-DOS and MS-DOS were only in terms of driver support and built in programs until version 6.1 where development diverged.

• 1.x
• 2.x
• 3.x
• 4.x
• 5.x
• 6.x
• 7.x
• 2000

Microsoft C/C++ (1983) 101 DOS Windows OS2

This is the original standalone Microsoft C/C++ compiler for DOS and Windows - Later versions were rebranded and renumbered as Microsoft Visual C++ and were bundled with Visual Studio or the SDKs.

• 1.x
• 2.x
• 3.x
• 4.0
• 5.x
• 6.x
• 7.x

Norton Commander (1986) 90 Utility DOS

Norton Commander is a MS-DOS based file shell that was widely popular due to it's two column design. You could easily copy and move files between one folder or another, execute DOS commands and more. It competed against many other file managers including Gazelle Q-DOS and Xtree

• 1.x
• 2.x
• 3.x
• 4.x
• 5.x
• 5.5x

Borland C++ (1990) 87 DOS Windows

Borland C++ targeted the professional application development market, while Turbo C++ targeted the home and hobbyist market. Borland C++ included additional tools, compiler code-optimization, and documentation to address the needs of commercial developers. In 1997 Borland C++ was replaced with Borland C++ Builder.

• 2.0 (DOS)
• 3.x
• 4.x

DR DOS (1990) 75 DOS

DR DOS is an MS-DOS compatible operating system from Digital Research that evolved from their earlier CP/M-86 based products Concurrent DOS and DOS Plus.

• 5.x
• 6.x
• 7.x
• 8.x

Microsoft Macro Assembler (1981) 75 DOS

The Microsoft Macro Assembler (MASM) is an x86 assembler that uses the Intel syntax for MS-DOS and Microsoft Windows. For a time, it competed with Borland Turbo Assembler. IBM re-branded early versions under the name IBM Macro Assembler. Later versions were bundled with Microsoft Visual Studio.

• 1.x
• 3.x
• 4.x
• 5.x
• 6.x

FoxPro (1990) 68 DOS Windows MacOS Unix

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.

• 1.0x
• 2.5
• 2.6

Lotus 1-2-3 (1983) 66 Spreadsheet DOS

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 (DOS)
• 1A (PCJr Cart)
• 2.x (DOS)
• 3.x (DOS)
• Add-ins
• 4.x (DOS)

Borland Turbo C++ (1991) 64 DOS

After Turbo C, Turbo C++ was Borland's home and entry level offering for a C/C++ compiler for MS-DOS and Windows. For a time, it was sold along side their professional Borland C++ product line.

• 1.x
• 3.x (DOS)

Microsoft BASIC (1981) 53 DOS CPM OS2

Although Microsoft did not invent BASIC, their founding product was a BASIC interpreter for the Altair computer. The descendants below includes Microsoft's BASIC-80 (MBASIC), BASIC-86 (pre-GWBasic), BASIC for Mac, BASIC Compiler 86/88, Basic Compiler for Mac, and Professional Development System 7.x. IBM Personal Computer Basic Compiler, GW-BASIC, QuickBasic, and Visual Basic are listed separately.

• -86 5.x
• -86 Compiler 5.x
• Compiler 6.0
• PDS 7.0
• PDS 7.1

Microsoft Word (1983) 50 Word Processor DOS OS2 Windows MacOS

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.

• 1.x (DOS)
• 2.x (DOS)
• 3.x (DOS)
• 4.0 (DOS)
• 5.x (DOS and OS/2)
• 6.x

After Dark (1989) 50 Novelty DOS

After Dark, from Berkeley Systems, Inc, is a set of entertaining screen savers for Mac and Windows. After Dark for Windows started off as "Magic Screen Saver" for Windows 2.x. After Dark was most famous for its "Flying Toasters" screen saver. Afterdark was very popular on both the early Macintosh computers and Windows 3.0, as neither included any kind of screen saver or screen blanker that would help prevent screen burn-in.

• 1.0 for DOS

QEMM (1990) 49 Utility DOS Windows

Quarterdeck QEMM is a DOS Extended Memory Manager for 386+ computer which allows you to make use of memory beyond the 640kb barrier. It can also be used with QRAM, a utility for freeing up the 640k base memory.

• 5.x
• 6.x
• 7.x
• 8.x
• 9.x

Adobe Acrobat Reader (1994) 48 Document DOS MacOS

Acrobat Reader is the free software from Adobe used to read, view, and print documents created by the commercial Adobe Acrobat product. Its primary strength is that documents appear and print identically across differing systems.

• 1.0

PartitionMagic (1995) 44 Utility DOS Windows

A tool from PowerQuest, and later Symantec, that enables manipulation of partitions through its own bootable media. PartitionMagic can shrink, grow, or move partitions without the need to backup and restore files in that partition. It supported a variety of file systems, and the core DOS-based parition tool fit on a bootable 1.44mb floppy disk. It was extremely popular, and made installing or removing multiple OSes much easier.

• 2.x
• 3.x
• 4.x

WordPerfect (1983) 42 Word Processor DOS

During the late 1980's, WordPerfect was THE standard word processor for DOS based PCs in big business. Under DOS, it competed mostly against Wordstar. WordPerfect for Windows enjoyed some success in the early Windows environments, but was quickly displaced by Microsoft Word for Windows. Later Windows versions were part of Borland Office/Novell PerfectOffice/Corel Office/Corel WordPerfect Office.

• 3.x (DOS)
• 4.x (DOS)
• 5.0 (DOS)
• 5.1 (DOS)
• 6.x (DOS)
• 7.x (Unix)

Microsoft Mouse (1984) 41 DOS Windows OS2

These are drivers provided by Microsoft for the Microsoft BusPort, serial, and PS/2 mice. Introduced in 1983, The Microsoft Mouse is historically important as it was one of Microsoft's earliest hardware products (The other being an Apple II Z-80 CP/M card). The first Mouse for the IBM PC was actually from Mouse Systems, not Microsoft. However, most clone mice emulated Microsoft's serial protocol and DOS driver software interface. The first application designed to make full use of the mouse was Microsoft Word for DOS, and they hyped a product called "Microsoft Windows" (not released until several years later) that was to compete against the upcoming Apple Macintosh and the Mouse Systems based Viscorp Visi On.

• 1.0
• 2.x
• 4.x
• 5.x
• 6.x
• 7.x
• 8.x
• 9.x
• 11.x

Borland Turbo Assembler (1989) 40 DOS Windows

Turbo Assembler is an x86 16-bit assembler from Borland. It competed against, and was often cited as faster than Microsoft Macro Assembler.

• 1.x
• 2.x
• 4.x
• 5.x

Borland Turbo Pascal (1983) 38 DOS

Borland Turbo Pascal is a Pascal programming language compiler with an Integrated Development Environment targeted at the hobbyist and entry-level market. There were versions for CP/M and DOS. For a time, it was sold along side their professional "Borland Pascal" product line. Borland also produced a set of "toolbox" libraries along side their earlier versions.

• 1.00
• 2.x
• 3.x
• 4.x
• 5.x
• 6.x
• 7.x

Norton Utilities (1983) 35 Utility DOS

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.

• 2.0x
• 3.00
• 3.10
• 4.0
• 4.5
• 5.0
• 6.0
• 7.0
• 8.0

Ghost (2000) 35 Utility DOS

Ghost, originally released in 1995 by Binary Research and later under Symantec with the "Norton" title, is a PC cloning and imaging tool. It can image and restore drives to drives of different sizes, supports many different file systems, and supports many different archiving and communications methods. Ghost 7.5 and earlier support running from DOS. Later versions are Windows-only.

• 7.x

Windows SDK & DDK (1986) 33 DOS

The Microsoft Windows Software Development Kits (SDK) provide sample program code, extra libraries, and documentation to aid application developers producing Windows applications. Microsoft Windows Driver Development Kits are similar sets of samples and libraries but specific to device driver development, and much more in-depth.

• Windows 2.x