Copy II PC (1985) 2 Utility DOS

Central Point Copy II PC is a disk duplication program that can successfully copy many copy protected disks using only standard IBM PC hardware. It is generally considered the best software-only solution for duplicating such disks. "snatchit".

• 6.00

CopyWrite (1990) 3 Utility DOS

CopyWrite is a disk duplicator that can duplicate disks with many advanced copy protection schemes using a standard IBM PC floppy drive and controller.

• 1990
• 1992

Crosstalk (1983) 9 Communications DOS

Originally released in 1982, Crosstalk XVI, from Digital Communications Associates Inc of Alpharetta, Georgia, is a powerful telecommunications program for the IBM PC with many scripting features. "XVI" means "16", and refers to the powerful new 16-bit x86 CPUs found in IBM PC's and compatibles. It was followed up by the MK 4 and Communicatior products.

• MK.4 2.x
• Communicator 2.x
• XVI 3.8x

DECTalk PC (1993) 3 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
• 3.x

DESQView (1984) 12 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) 4 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

DiskClone (1998) 1 Utility DOS

DiskClone, from Quarterdeck, is a simple, professional, small, powerful, and easy to use hard disk cloning tool. It can copy a drive to another internal or external drive of different sizes. It can be used as a backup, or a migration tool to a new drive. It all fits on a single floppy disk. "Corporate" editions.

• 1.0

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

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

DoubleTools for DoubleSpace (1993) 0 Utility DOS

DoubleTools is a set of Windows-based utilities that adds functionality to DoubleSpace, included with MS-DOS 6.0.

• 1.0

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

Expert Astrologer (1993) 1 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) 1 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 Personality Expert (1992) 0 Novelty DOS

Personality Expert is a budget title from Expert Software, where "Dr. Expert" quizzes you about your personality to make various suggestions and predictions.

• 1992

Expert Pet Care (1992) 0 Reference Novelty DOS

Expert Pet Care, from Expert Software, is a budget title for the IBM PC. "Expert Pet Care is your complete guide to your pet's health and upkeep. Developed by a practicing veterinarian, Expert Pet Care offers valuable information and advice on nutrition, exercise, emergency care, behavioral problems, training, and medication. It also includes special tips on training, diet and grooming, plus produces pedigree and descendants charts. You can lean about the various breeds of dogs and cats, and even view pictures of them! Expert Pet Care contains information on over 150 different breeds. You'll learn about each breed's physical attributes, history, and special care considerations. Expert Pet Care Provides vital emergency health care do's and don'ts which may literally save your pet's life. You can easily create a medical history for your pet. Expert Pet Care tracks information such as vaccinations, allergies, surgery and more. All you have to do is fill in the blanks. Expert Pet Care is simple to use - it's arranged like a stack of index cards that can flip through at your own pace, and in the order you like!"

• 1992

Expert Utilities (1990) 0 Utility DOS

Expert Utilities is a rudimentary file manager shell for DOS. It provides an on screen directory listing and a visual command menu. It does not use the mouse.

• 1990

EZ-Drive (1996) 0 Utility DOS

EZ-Drive is a hard disk partitioning tool bundled with new hard drives. It detects, partitions, formats drives, and installs BIOS overlays, all in one easy to use program. Such setup programs were often necessary due to the complexity of BIOS size limitation and the skyrocketing size of new hard drives. EZ-Drive is similar to Ontrack Disk Manager.

• 8.x

EZ-Tape (1992) 1 Utility DOS

EZ-Tape backup system for Windows and DOS.

• 3.x (DOS)

Failsafe Computer Guardian (1992) 0 Utility DOS

Failsafe Computer Guardian is a DOS TSR utility that prevents programs or other users from accessing or making changes to designated files on the hard drive. It includes password control, user groups, logging, keyboard locking, screen blanking, and support for Microsoft windows. Notably, it can do all of this with minimal DOS memory overhead, only 14k of RAM.

• 1.x

FastBack (1986) 0 Utility DOS

Fastback, by Fifth Generation Systems, Inc, is a backup utility for DOS. Its key feature is that it can read and write both a floppy disk and hard disk at the same time by making use of dual-channel DMA. Combined with speedy data compression, it can make a very fast backup.

• Plus 3.x
• Plus 6.x

FastFilr (1990) 0 PIM DOS

FastFilr is a simple addressbook for DOS. It features fast lookup, and the ability to print labels and reports. little information about them out there. They also sold a product called "The Screen Generator", a screen designer/manager for use with a number of programming languages.

• 1.0

FastLynx (1990) 1 Communications DOS

FastLynx, originally called FastWire, is a high-speed file transfer program that operates on two computers connected together via a serial nullmodem or special parallel port cable. It competed against similar file transfer programs such as LapLink.

• 1.x
• 2.x