CWI Tutor DOS (1991) 0 Education DOS

The ultimate DOS tutor. Everything you wanted to know about DOS and more.

• 1.x

DacEasy Accounting (1987) 7 Financial DOS

DacEasy was the first company to offer affordable accounting software geared towards the small business. It was first released in 1985 and had gone through many DOS revisions at the time the Windows version was released.

• 4.x (DOS)

DanCAD 3D (1992) 1 Engineering DOS

DanCAD is a tool for producing technical line drawings and animations. It is designed for mechanical engineers to analyze and simulate 3d mechanisms, such as complex compound robotics motions. mathematical functions, animation, and PostScript printing.

• 2.5

DataEase (1988) 0 Database DOS OS2

DataEase, from DataEase International Inc., USA., is a fast, easy to use yet powerful, menu-driven relational database development system for the IBM PC. Not copy protected.

• 4.5

DataPerfect (1993) 4 Word Processor Database DOS

DataPerfect, originally written by Lew Bastian, published through WordPerfect Corp, and later through Novell, was a fast, memory efficient, but capable relational database for DOS. WordPerfect Corp sold the product alongside their other DOS based office products, such as WordPerfect and PlanPerfect. In 1995 Novel released DataPerfect as freeware and development was continued by its original author until about 2008.

• 2.x

dBASE (1983) 35 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 v1.1
• 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

DeluxePaint Animation (1990) 2 Graphics DOS

DeluxePaint Animation is a raster based animation program based on the DeluxePaint painting program. It features ease of use, powerful drawing functionality, and a playback utility. As a DOS program, it was limited to 640k and 320x200 resolution in 256 colors.

• 1990

Derive (1994) 2 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

DesignCAD 2D (1988) 2 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) 1 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) 8 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
• DESQView X 2.x

Direct Access (1988) 6 Utility DOS

Direct Access is an easy to use menuing program designed to simplify access to applications on systems with many programs loaded on the hard drive. It is customizable, includes screen blanking, and includes password protection and usage logging. Later versions also detect common programs already installed on the hard disk.

• 5.x

Disk Technician (1987) 0 Utility DOS

Disk Technician, from Prime Solutions Inc., is a hard disk utility and surface monitor. It contains an interleave adjuster and pattern tester similar to Spinrite. The Gold version also includes a defragmenter and disk-level virus protection.

• Gold 1.x

DiskLock (1993) 0 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)

DisplayWrite (1984) 7 Word Processor DOS

DisplayWrite is a word processor that is based on the IBM Displaywriter dedicated word processing system. It directly competed with software ports of dedicated word processors such as the Wang Word Processing System (or its clone MultiMate ), Lanier Word Processing Software, Xerox, DEC, or similar.

• 5

DOOM (1993) 28 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) 0 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

• 2.5
• 2.6

DR DOS (1990) 91 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

Dr Halo (1985) 10 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) 7 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

DrawPerfect (1990) 2 Graphics DOS

DrawPerfect, from WordPerfect Corp., is a vector based drawing program with graphing functionality used for making slides and presentations. It was later replaced with WordPerfect Presentations

• 1.1 for DOS

Easy Working Desktop Publisher (1992) 0 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