MasterModeller is a model-designing program. With it, you design financial models that enable you to analyze your figures, produce forecasts, and test the effects of decisions. You can set up as many models as you like, sort them all on disk, and use them whenever you need to.

MasterType Training Ground from, Scarborough Systems, is an educational typing tutor program intended as preparation for to the full-blown "MasterType" typing tutor and game. It includes a fingering chart, basic and progressive typeing practive. Later versions of MasterType merged the game and Training Ground in to a single product.

An educational Math / Logic program from Broderbund. improve your critical math skills. The areas covered are: Addition & Subtraction, Multiplication, Division, Equivalencies, Estimation, Fractions, Pattern Recognition, Shape Orientation, Shape Recognition, Scale, Symmetry, Problem Solving."

Mathcad is an easy to use graphical calculation program targeted at engineering professionals. It supports a wide variety of mathematical functions. There were versions for DOS, Macintosh, and Windows.

Mathematica, from Wolfram Research, Inc., is a mathematical and scientific application to formulate complex equations. and Mathworks MatLab.

MathType is a tool for creating printable mathematical formulas. It includes a set of special fonts with mathematical symbols, and the application helps compose them. The results can then be copied in to word processors, or exported to graphics files. Editor.

MatLab is a high speed, interactive programming utility for manipulating, calculating, and plotting complicated mathematical equations. It is considered easy to use for those familiar with typical algebra equations.

An interactive typing tutor for the IBM PC that uses a variety of entertaining learning styles.

MaxThink Max89 is a writing outliner / idea processing program. Unlike a word processor that focuses on presentation, MaxThink focuses on the ideas behind what you are writing. You enter ideas as you go, and MaxThink provides advanced tools to combine, sort, and organize your ideas in different ways.

MaynStream is a high-end but minimalistic server backup program that only works with Maynard tape drives. There were versions for OS/2, Netware, Windows, and DOS.

McAfee VirusScan was a very popular and reliable virus scanner during the late 90s. Notably, they distributed a free shareware version of their product. VirusScan was often pre-loaded with OEM computers.

Media Master is a disk utility for interchanging files between MS-DOS and certain CP/M or non-DOS systems. Supported disks must be MFM or FM decodable by the computer's floppy disk controller, therefore formats like Apple II or C64 can not work.

MediaBlitz is a tool for creating "Multimedia" presentations from sound, music, and animation clips. Elements use a time-based organization, you can specify exactly when each item plays and for how long. MediaBlitz can also be used with Asymetrix ToolBook to create interactive presentations.

MegaDittos is a set of political screen savers that poke fun at Bill Clinton, Al Gore, and Hillary.

Memory Commander, from V Communications, Inc, is a memory manager similar to QEMM or 386MAX, but can expand the DOS base memory beyond 640K with some kinds of applications.

Memory Shift is a very early task switching program for DOS. It operates by "partitioning" the computer's memory and loading different applications in to each partition. It can then switch between each application and share data between applications.

MemoryMate is an easy to use memory-resident free-form database. It automatically indexes content so all you have to do is type in a keyword to find your record. As a free-form database, you can use it much like a Personal Information Manager, but you can use it for any kind of data you want. You can set it to show you "reminders" at a certain date.

Menu Maker is a well featured menuing shell for DOS designed to give you instant access to the programs installed on your hard disk drive. It includes DOS utilities, passwords, screen burn-in protection, and more.

Expert Software Menu Power is a friendly menu shell application for DOS systems. It features automatic configuration for over 400 popular applications, built in screen saver, customizable screen colors, unlimited sub-menus, custom menu help. It was sold as a low-cost budget title among a selection of similar low-cost commercial applications from Expert Software.

Menu Works, from PC Dynamics, Inc, is a DOS based menu program that lets you boot your computer to a friendly menu of options rather than a confounding DOS prompt. It supports mice, features custom menu creation, sub menus, automatic scanning for known programs on your hard drive, on-line help, built in file management, and a built in file search function.

Meta Software Design, which later became "MetaDesign", is an adaptable charting and diagraming program used for flowcharts, org charts, and software design.

METZ File F/X is an enhanced file manager and task manager for Windows 3.0. It includes file searching tools, and a built in screen saver. The task manager includes a customizable menu from where you can start applications.

MG Advanced Diagnostic is a floppy disk editor and diagnostic tool. Released in 1985 by Millers GraphicsFor the TI-99/4a with CorComp 9900 disk controller

Micro Illustrator is a simplistic DOS based drawing program specifically for the Tandy 1000 computers. It requires a joystick-attached input device and supports the Tandy 16-color graphics.

Charisma is a business charting, presentation, and drawing program that is the successor to Micrografix Windows Graph. It features ease of use by making use of the Microsoft Windows environment, and a similar user experience to previous Micrografx products. Charts include bar charts, line charts, pie charts, and scatterplots. It features numeric charting, a variety of high resolution scalable fonts, and a large clipart collection.