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DB Master is a powerful and flexible database for early personal computers. It was produced by Stoneware Inc., and in 1986 it switched ownership to Macon Software Inc.


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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.


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This is a tutorial program included with DEC Rainbow computers. The DEC Rainbow is a non-IBM compatible MS-DOS computer. This program is for the CP/M-86 operating system.


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Hard disk diagnostics and utilities for the DEC Rainbow computer. The DEC Rainbow is a non-IBM compatible MS-DOS computer. This program is for the CP/M-86 operating system.


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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.


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dGraph is a dedicated graphing package specifically designed to create graphs and charts from data stored in dBase databases. Fox and Geller also produced an almost identical product named RGraph, designed specifically for creating charts using R:Base databases.


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This is the diagnostics test disk for testing the Texas Instruments Professional Computer. compatible computer that runs an adaptation of MS-DOS and CP/M-86.


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Diagram-Master, from Decision Resources and later Ashton-Tate, is a graphics tool specifically geared toward making organization and Gantt charts. It can produce very high-quality presentation graphics using laser printers and plotters. Supports CGA, EGA, and the IBM Professional Display. This program was also bundled in the Master Graphics Presentation Pack.


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Diagraph, from Computer Support Corporation, is a program that lets users assemble presentations, charts, and graphs from a very large library of predefined symbols.


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Digital Research C is a compiler developed for use with Digital Research's CP/M systems. It was also ported to DOS.


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PL/I is a programming language oriented towards scientific and business programming. Digital Research provided implementations for their CP/M operating system as well as MS-DOS.


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


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The Display Enhancement Packageby OAK Tree Systems This is a library that permits easy access to the the TI-99/4a 40-colum video text mode.


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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.


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Digital Research's DOS Plus was an intermediate product between CP/M-86 and DR-DOS. It can run both CP/M-86 and MS-DOS programs, and read both disk formats. It is essentially a stripped down version of Concurrent DOS that keeps the DOS compatiblity.


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Helix/Double Helix is an easy to use relational database for the Apple Macintosh. It features a visual programming system, and options for multiuser over AppleTalk.


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DoubleDOS is a simple and easy to use multitasking tool for DOS. It can preemptively run up to two DOS programs at a time. Its main advantage is that it requires very little RAM overhead compared to other multitasking or task switching environments. Because DOS programs can and usually do bypass OS calls, many programs must be "patched" in order to work. things at once, then this would have been a good choice. Reportedly, the first version may have worked with DOS 1.x.


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DR Draw is a shape-based drawing program that uses Digital Research's GSX graphics library, making it portable across CP/M and DOS architectures with different video systems.


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DR Graph is a business graphics creation program. It can create line, bar, pie, and scatter graphs and print them on a graphics printer. DR Graph is implemented using Digital Research's GSX graphics library, and can run on many different platforms.


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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.


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Draw 'n Plot, from Quality 99 Software, is a drawing application and library for the TI-99/4A with Extended Basic, that adds the ability to use bit-mapped graphics.


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Access Manager is a database programming library sold by Digital Research. It supports key fields, b-tree indexes, record locking, and deleted records. It is designed for use with Digital Research language products including DR C, CBASIC, PL/I, and Pascal MT+, and may be used alongside the Display Manager programming libraries. There were versions for both CP/M and MS-DOS.


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Display Manager is a programming library from Digital Research that abstracts the physical display or terminal type from the application. It is designed for use with Digital Research language products including DR C, CBASIC, PL/I, and Pascal MT+, and may be used alongside the Access Manager programming libraries. There were versions for both CP/M and MS-DOS.


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DRI Programmer's Utilities, from Digital Research, includes Lib86, Link86, Rasm86, and Xref86, for use with DRI programming languages.


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DS Backup Plus is a simple hard disk backup utility. It was not as full featured or robust as other backup products, but it got the job done. Backups can be done from within the program or from the command line. It supports wildcards, filespec inclusion/exclusion, backup to any DOS drive type, automatic disk formatting, incremental backups, and claims to be faster than DOS backup and restore.