PC-CALC is an easy-to-use "Visible Spreadsheet" program. If you work with numbers, at home, on the job or at school, PC-CALC is for you. Whether the task is simple or complex, PC-CALC can help you. By using its powerful commands, reports can be produced in minutes that would take hours to do manually, or days to write in BASIC. PC-CALC, written by Jim "Button" Knopf of ButtonWare ( http://en.wikipedia.org/wiki/Jim_Knopf ), is historically notable because it was one of the first programs marketed as shareware.

PC-File is a simple flat file database management program for DOS. PC-File, along with PC-Write, and PC-Talk were the first popular products sold under the "Shareware" concept.

PC-Fullbak was a small low-cost hard drive backup program that aggressively competed head-on against Fifth Generation Systems Fastback. It was comparatively speedy, and supported appending to existing backups. under the name "PC-FullbakEZ". There were also versions for the Macintosh.

This is the client software used to communicate with Quantum Computer Service's PC-Link service. PC-Link followed the success of Quantum's Q-Link service for the Commodore 64. PC-Link was the predecessor to America OnLine.

PC-Talk is a simple telecommunications program for DOS. PC-Talk, along with PC-Write, and PC-File were the first popular products sold under the "Shareware" concept.

PC-Type is a bare bones, budget oriented, word processor. PC-Type, along with PC-File were among the first popular products sold under the "Shareware" concept.

PC-Write, written by Bob Wallace of Quicksoft, was an editor for the PC and along with PC-File and PC-Talk was one of the first widely distributed shareware programs.

PC-Xview is a mature X Windowing program for DOS. It supports a wide variety of DOS network clients

pcAnywhere is a tool that enables one to remotely control another computer, or to be remotely controlled.

PeachText 5000 is a complete personal productivity system for word processing, financial modeling, mailing lists and simple database management. It contains a thesaurus, spell checker, and file conversion tools.

Peachtree Accounting was originally created in 1975 by an Altair dealer, The Computer SystemCenter, in Atlanta, Georgia to help sell Altair computers. That possibly would have made it the first accounting package for personal computers.

Peachtree Inventory Management is a business accounting tool for tracking sales inventory.

This is an early OCR program for DOS based computers.

Perfect Calc, from Perfect Software, Inc, is a VisiCalc-like spreadsheet for DOS. It was somewhat of a budget product, and bundled with a number of CP/M and DOS systems.

Perfect Filer, from Perfect Software, Inc, is an easy to use database for DOS bundled with a number of early DOS and CP/M computers. "Perfect Filer is designed to assist you in the effective management of information. Essentially Perfect Filer allows you to build a computerized records management system where data on clients, customers or other case records can be stored . No more typing and retyping the same information, searching through file drawers, or hand copying or typing information stored in a file . With Perfect Filer your computer can do these tasks and more . You enter information in the file only once, Perfect Filer retrieves it, prints it where and how you want it-on invoices, shipping labels, monthly statements, form letters, etc . Perfect Filer's uses in the modern office are unlimited."

Perfect Link, from Perfect Software, Inc, is a rudimentary terminal telecommunications program for DOS.

Perfect Writer, from Perfect Software, Inc, is a simple word processor for MS-DOS and CP/M-80 systems. It was bundled with many 8-bit CP/M systems and some early MS-DOS and IBM PC compatible computers. It was generally considered a low end entry-level product, but it was designed with portability in mind.

Perks-PC is a set of terminate-and-stay-resident utilities originally designed for the Zenith Z-100 and optimized for use on laptop computers. It features a notepad, typewriter tool, a four-function calculator, appointment calendar, card file, a rudimentary telecommunications program with file transfer abilities, and alarm clock. Notably, it claims to support all versions of DOS including DOS 1.x.

Personal Pearl is an easy to use relational database information manager targeted at home users. It originated on the CP/M-80 operating system and was bundled with many 8-bit computers such as the Osborn, Morrow, and Epson computers.

PFS Access is an easy to use, but rather basic, telecommunications program designed to fit in with the low cost PFS series products. It lacks many features found in more professional products.

PFS First Choice is a simple, easy to use integrated office suite marketed towards new users. It includes a word processor, spreadsheet, graphics, database, and telecommunications. First Choice is similar to, but not as feature rich as, the standalone PFS office products. It competed against AlphaWorks/LotusWorks and Microsoft Works.

First Graphics, from Software Publishing Corp, is a business graph plotting program. It is similar to, but not as full featured as Harvard Graphics. Earlier version were known as PFS:Graph

First Publisher, from Software Publishing Corporation, is a WYSIWYG desktop publisher for DOS that excels at producing extremely high quality text and graphics print even using dot-matrix printers. This program originated as T/Maker Clickart. In 1991 Software Publishing Corp sold their PFS series to Spinnaker Software, where it became Easy Working Desktop Publisher.

PFS Preface is a menu system and file manager for DOS that uses an interface style similar to other PFS products.

PFS Professional File is an easy to use flat-file database for DOS. It is a combination of the earlier PFS:File and PFS:Report products.