Corel Photo Paint is a bit-mapped graphics editor optimized for photo manipulation. It competed against Adobe Photoshop and Paint Shop Pro, and was often a companion product to the vector based CorelDRAW. It includes a large number of special effects, a color management system, brushes, layers, and scanner support.

A printing program for creating over 20 types of printing projects including cards, banners, signs, certificates, calendars, brochures, business forms, labels, membership cards, coupons, tickets, bookmarks, and doorknob hangers. It uses the 32-bit CorelDRAW 6 mini-engine.

CorelDRAW is a vector based drawing and illustration program. Tools like CorelDRAW enabled desktop publishers to create professional quality illustrations that printed and scaled without distortion. It is primarily a Windows application, but was ported to Mac OS, Mac OS X, Linux, CTOS and OS/2. The earliest versions ran on Windows 2.

EZ Legal Software Corporate Secretary is a set of legal templates geared towards the operation and management of a company.

Correct Grammar is a grammar checking and analysis tool for DOS. Correct Grammar incorporates technology from the Houghton Mifflin CorrectText system.

Correct Quotes, from WordStar International, is a small database of about 5000 famous quotes. There were versions for DOS, Windows, and Macintosh. WordStar International, the producers of WordStar, also sold several other similar companion products including Correct Writing - a writing style manual, and Correct Letters - a large collection of letter templates.

Crayola Art Studio, from Micrografx, is a heavily lobotomized graphics packaged aimed at kids. It features a Bob-like "room" menu, animated characters, sound effects, a paint program that can place shapes and clipart, and several other printing programs. It is similar to, and competed against Microsoft Fine Artist.

Cricket Graph, from Cricket Software and later Computer Associates, was a best selling presentation graphics program, and a companion product to CA-Cricket Presents (formerly Xerox Presents). This program can create a variety of graphs, such as line, bar and pie charts. CA-Cricket Presents can then import the graphs in to presentations.

DaVinci eMail, from Da Vinci Systems, is a reliable e-mail program that integrates with Novell Netware MHS and GMHS mail system backends. There were versions for Windows, DOS, and OS/2. Earlier versions ran under Windows 2.

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.

Dashboard for Windows, originally from HP, is a convenient push-button utility which gives you quick access to and maximum control over your Windows programs. and buttons for launching programs. Drag-and-drop support for printing, plotting, and faxing. Miniature screens that make it easy to work with several full-screen programs at once. An alarm clock with a built-in snooze alarm. And "At a glance" feedback to let you know which programs are running and how much memory you are using. It has a resemblance to the Unix Common Desktop Environment toolbar.

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. It featured an all-in-one database, development environment, form designer, reporting, and programming language. Its main strength was as an application develoipment environment that required minimal programming and automated/integrated many implementation and maintenance tasks. There was also a sort-of Unix version "DataEase XDOS". Initially, it competed with dBase, Condor, and R:Base.

PowerQuest DataKeeper 3.0, formerly from HighPoint Technologies, is a powerful real-time backup program. It features the ability to continuously monitor backups, works with any removable media, compression, and registry protection.

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.

Back before MapQuest or Google Maps, people could own an entire USA road map on a CD-ROM. DeLorme Street Atlas was one of the most popular road mapping products. You can search for street names or by phone number and zoom in on local neighborhoods. enabled users to create customized maps. focused on road maps. Later it competed with Microsoft Expedia Streets and Rand-McNally Route Planner.

DeltaGraph, originally from DeltaPoint and later SSPS, was a powerful business and scientific statistical graphics package for the Apple Macintosh and Microsoft Windows. graphics-only packages like Excel.

Deneba Canvas is a shape based drawing and illustration program for the PC and mac. Unlike other publishing programs of the time, Canvas combined the ability to use vector graphics and raster images. It could also function as a word processor.

DeScribe was one of the first natively designed word processors available for OS/2. Although it was a word processor, it had many features of a desktop publishing tool.

Design It! 3D is an easy to use budget 3D modeling tool. It is suitable for creating home arrangement designs, and features a 3D preview that lets you "walk" through your creation.

DesignView is a 2d drawing and CAD program, designed to functionally refine smaller components for use in larger CAD drawings. It was praised for its ability to include rules and programmatic manipulation rather than just being a drawing program. DesignView features equation solving, mass property synthesis, user defined functions, and animation. Supports reading Autocad, Versacad, and Cadkey files.

Released in 1997 by DayBreak Software, Break A Day is a calendar that shows a different Dilbert comic every day. Includes a 16-bit Windows 3.1 version, 32-bit Windows 9x/NT version, and a Mac version.

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.

Diskeeper is a professional disk defragmenting tool with versions for both 9x and NT. It includes features such as scheduling and background defragmentation.

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.

Dr Solomon's Antivirus was a top rated commercial virus scanning suite. There were versions for DOS, Windows 3.1, 95, 98, Novell, SCO Unix, Solaris, and OS/2.