dBASE (1983) 60 Database DOS Windows

Ashton-Tate dBase was an early popular database management system for CP/M and MS-DOS. It was regarded as one of the killer applications for CP/M, and achieved good success. At the time of conception Ashton-Tate was a garage based company but quickly grew.

• IV v1.5
• IV v2.0
• 5.x

DECTalk PC (1993) 1 Utility DOS

DECTalk was a text to speech system used in automated telephone, radio, and TV systems. It was notably used as an artificial voice by Stephen Hawking. Most DECTalk devices were standalone serial devices, however DEC did produce an ISA expansion card for the IBM PC that contained this functionality. This software is required to operate these ISA cards.

• 4.x

Derive (1994) 4 Mathematics DOS

Derive was a computer algebra and graphing system, developed as a successor to muMATH by Soft Warehouse, Inc. in Honolulu, Hawaii, now owned by Texas Instruments. Derive was implemented in muLISP, also by Soft Warehouse. The first release was in 1988 for DOS. It was discontinued on June 29, 2007 in favor of the TI-Nspire CAS. The last and final version is Derive 6.1 for Windows.

• 2.x

DeScribe (1991) 2 Word Processor OS2

DeScribe is a word processor with some advanced features primarily for OS/2. Later, it was made available for Windows 3.1, 95, and NT.

• 4.0

DesignCAD 2D (1988) 1 Graphics Engineering DOS

DesignCAD is a low end, but well featured, drafting program. It was sometime a companion product to DesignCAD 3D.

• 5.x

DesignCAD 3D (1987) 0 Graphics Engineering DOS

DesignCAD 3D is a powerful, easy to use, and low cost DOS based CAD program that claimed to have all of the features of the more expensive CAD programs. It competed against low-cost CAD programs such as TurboCAD, Generic CADD, and Drafix. It was sometimes sold alongside DesignCAD 2D

• 4.x

DESQView (1984) 16 Utility DOS

DESQView, from Quarterdeck, was a DOS application multi-tasker and in later versions functioned as an X client for applications on remote UNIX systems. It competed against IBM Topview. The original DESQ was just a task switcher, but subsequent versions offered preemptive multitasking of well behaved DOS programs on real-mode 8088 PCs. It gained popularity when DESQView 386 added virtual x86 support. This enabled the ability to multi task many poorly behaved programs, and was often used on BBSes due to its excellent COM port handling. It was later overtaken by OS/2 and Windows.

• DESQView X 1.x
• 2.x

Digitalk Smalltalk/V (1986) 3 OS2

Smalltalk/V was the first widely available version of Smalltalk. It was developed by Digitalk in 1986 for DOS, Macintosh, and later Windows.

• 1.x (OS/2)

DiskLock (1993) 2 Utility DOS Windows

DiskLock, From Fifth Generation Systems, and later from Symantec as Norton DiskLock, is a data security tool that can lock a hard disk or individual files or directories so that it requires a password to access any data. It can also log activity to detect unauthorized access attempts. It also features the ability to lock the system after an idle usage period. There were versions for PC and Mac.

• 2.x
• 3.x

Disney Animation Studio (1992) 1 Graphics DOS

Disney Animation Studio is an animation graphics tool, that originated on the Amiga. It supports multiple VGA resolutions.

• IBM (1992)

DOOM (1993) 34 DOS

Doom is the original fully immersive 3-D first person shooter from ID software.

• Alphas
• 1.0
• 1.1
• 1.2
• 1.25

DosFax (1992) 0 Communications DOS

Delrina DosFax is a DOS based program for sending and receiving faxes via a modem that has fax capabilities. This software was often bundled with modems or PCs. It was often accompanied by Delrina WinFax.

• 2.0

DoubleDisk (1991) 1 Utility DOS

First released in 1989, DoubleDisk was the first real-time drive compression product for DOS. It is a fairly no-frills program and sticks to what it does best. It was relatively low cost compared to its later competitors. and Expandz! Plus

• 2.6

DR DOS (1990) 54 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.

• 7.x

Dr Halo (1985) 9 Graphics DOS

Dr Halo, by Media Cybernetics, is a DOS based image editor. It was sometimes distributed as a value-added tool with mice or video cards. Its image editing capabilities were fairly weak, and its main strength came from its adaptability to new hardware, positioning it mainly as an entry-level product provided with new hardware.

• IV

Dr. Sbaitso (1992) 5 Novelty Audio DOS

Dr. Sbaitso is a simple AI program, similar to the famous "Eliza", that makes use of text-to-speech software. Distributed as a demonstration application with Creative Labs Sound Blaster cards.

• 2.x

Easy Working Desktop Publisher (1992) 1 Publishing DOS

Easy Working Desktop Publisher is a rebranded version of PFS:First Publisher. PFS:First Publisher and the other PFS titles were acquired from Software Publishing Corp by Spinnaker Software in 1991.

• 1.0

Easy Working Tri-Pack (1992) 0 Word Processor Spreadsheet Database DOS

The Easy Working Tri-Pack, from Spinnaker Software, is a bundle of three budget productivity applications from Spinnaker Software. It includes Easy Working The Writer - a word processor, Easy Working The Filer - a database, and Easy Working The Planner - a spreadsheet. These applications boast ease of use with a friendly menu interface wile remaining full-featured.

• 1992

Expert Animator (1992) 1 Graphics DOS

Expert Animator is a budget DOS Based Animation Package. Features drawing, painting, and animating, point-and-click choreographing, generating animated electronic greeting cards, sound and music, 12 independently animated characters, and 256 color VGA support. It was published by Expert Software, who specialized in low cost budget software.

• 1992

Expert Astrologer (1993) 0 Novelty DOS

A computerized tool from Expert Software for displaying your personalized daily horoscope. It can also interpret your personality traits, values, temperament, attitudes, adaptation, [and gullibility]. Plots trends in business, fitness, creativity, and social activities. Prints chart wheels, calculates planet positions, [and empties your wallet.]

• 1993

Expert Astronomer (1992) 0 Reference Novelty DOS

Expert Astronomer from Expert Software is a budget star chart with a large number of features. Database includes around 9000 objects including stars, constellations, and planets.

• I

Expert Home Design (1992) 2 Graphics DOS

Expert Home Design is a simple 2d layout program with home interior-oriented elements. It is one of a series of similar budget "design" titles published by Expert Software from RiverSoft.

• 1992

Expert Landscape Design (1992) 0 Graphics DOS

Expert Landscape Design is a simple 2d layout program with home landscape-oriented elements. It is one of a series of similar budget "design" titles published by Expert Software from RiverSoft. Design, and Expert Home Design.

• 1992

Expert Office Design (1992) 0 Graphics DOS

Expert Office Design is a simple 2d floor layout program with office-oriented elements. It is one of a series of similar budget "design" titles published by Expert Software from RiverSoft. Design, and Expert Home Design.

• 1992

Expert Paint 'n Print (1990) 2 Graphics DOS

Paint and Print, from Expert Software, is a budget drawing program for DOS.

• 1992