ThinkTank is an outliner program or "Idea Processor" that arranges notes and ideas in a hierarchy that you can easily re-arrange. It was marketed as a tool for writing document outlines, brainstorming, notes, and todo lists. But it proved to be a very popular program, not just for writers, but for anyone who wanted to organize and move around ideas.

A once popular, powerful, easy to use project management program first released in 1984 from Breakthrough Software. Has unlimited number of tasks, dependencies, resources, and cost categories. It competed against Microsoft Project, and CA-SuperProject. Breakthrough Software merged with Symantec in 1987. The final version was 6.x for Windows.

Timeworks DOS Office, from Timeworks, Inc., is an office suite consisting of the Timeworks Word Writer PC word processor, the Timeworks SwftCalc spreadsheet, and the Timeworks Data Manager desktop database.

Backup Pro, from The Software Toolworks, is an easy to use backup program for MS-DOS. It features drop down menus and mouse support. It was sometimes bundled with OEM computers, and was sold for very low cost compared to others.

Toolworks DOS Tutor is an extensive DOS tutorial with detailed descriptions about the operation of common IBM PC compatibles, peripheral hardware, and the operation of DOS.

Top Priority is a Personal Information Management tool that keeps track of your appointments and tasks, set priorities, alerts you of periodic events, chart progress, and creates schedules. It offers an optional resident version that can run in the background while other DOS programs are in use. Can export data to Calendar Creator Plus.

Released by IBM in 1984, TopView was a text-mode windowed multitasker for the IBM PC, XT, and AT computer. It featured preemptive multitasking, text-based windowed task sessions, overlapping windows, and supports the use of a mouse. In part, it was one of the reasons why overlapping windows were added to Microsoft Windows 2.0. TopView was later overtaken by DesqView, OS/2, and Windows. For more information, see the Topview 1.00 Software Spotlight.

Touch Typist, from Newline software, is a small typing training program that is specific to Zenith-Z100 computers.

ToyBox II, later renamed to Magic Desk, is a simplified graphical menu system that lets you launch your DOS applications from a selection of tiled iconic buttons. Supports nested hierarchies, includes an icon editor, and a number of common icons.

Tree86, from The Aldridge Company, is an easy to use tree-based file manager for DOS.

Released in the early 90s by the Japanese company Trend Micro Devices, Inc (later just Trend Micro), Chip Away Viruses is a DOS based virus scanner that is intended to run from a hardware product built in to a PC motherboard before the system boots. It includes a custom embeddable DOS (called X-DOS), but it can be run from regular DOS. Trend Micro also produced the products PC Rx (A regular software virus scanner), and PC-cillin (a hardware/software combo that keeps critical boot information in a special device). Users sometimes misinterpreted the name "ChipAway Virus" as being a virus itself.

TTY Communications is a rudimentary dial up/terminal emulation telecommunications package sold with the Texas Instruments Personal Computer.

Borland's Turbo Lightning is a DOS based TSR spell checker. It can also look up Synonyms.

Turbo Tax, from ChipSoft, was a program that assists people in filing their tax returns.

Type Faces is a program that can print word processing documents using a number of fancy fonts. The fonts are rendered graphically so you are not dependent on the fonts included with your printer. At the smaller sizes, the fonts are letter quality. Type Faces supports formatting codes that you can insert in to your documents, such as right justify, centering, and underline.

U.S. Atlas is a computerized world map with thousands of facts and statistics for US counties. Software Toolworks also produced a World Atlas, and a multimedia CD-ROM atlas.

V-Print, from CompuView, is a printing product designed to accompany VEDIT.

V-Spell, from CompuView, is a spell checking product designed to accompany VEDIT. VEDIT was a powerful, customizable, and portable editor designed for programmers and power users.

Varsity Scripsit is a menu driven, easy to use, low cost word processor sold by Tandy/RadioShack and targeted toward academic users. It features footnotes, built in help, split screen, spell checker, automatic hyphenation, table of contents and keyword index generation, user definable macros, reference markers, paragraph locking, line drawing, and phonetic symbols.

Visual Communications Network's ExecuVision was the first business presentation package for the IBM PC. It was targeted at business professionals, and was advertised as a complete graphics art department on a computer. It was also notable for it's clip art collection, which was also a first. Wanted: VCN ExecuVision Graphics Library 3: Industry and Business

VEDIT, from CompuView, is an extremely powerful, flexible, and customizable editor designed for power users and programmers. It can handle extremely huge files. It has a programmable command mode that can be used to automatically perform complex operations on files. It features a completely customizable keyboard layout and special features for editing programming language source files. supported a large number of terminal types.

Ventura Publisher, originally from Xerox, is a professional desktop publishing program for the GEM graphical environment and later Windows. It has the distinction of being the first popular publishing program for the IBM PC platform. It competed with Aldus PageMaker, which initially was more popular on the Mac platform. There are also versions for Mac and OS/2.

First released in 1983 by T & W Systems Inc (later Versacad Corporation) and based on their earlier T-Square product, VersaCAD is a sophisticated professional object design and drawing tool for the IBM PC. It competed heavily against AutoCAD. A very in-depth history of VersaCAD can be found on Cadhistory (PDF Link)

VersaForm is a business oriented database based around business forms and procedures. It features easy integrated form creation, entry, and reporting. Pascal system, and supported large databases on Corvus hard drives.

SpaceManager, from Vertisoft, the authors of DoubleDisk which became Microsoft DoubleSpace, is a utility that adds more features to DoubleSpace. It adds access to additional compression methods to get better compression at the expense of CPU speed, can bypass compression for files that do not compress well, automatically schedule a drive recompression, automatically mounts compressed floppy disks, and shows drive usage details and compression statistics.