Opening an MM File

The MM file type is primarily associated with FreeMind.

MM	File extension: MM
	File type:	mind map file

What is an MM file?

MM files mostly belong to FreeMind. MM stands for 'mind map'. MM file extension is used to save data files associated with the FreeMind application.

Main Use: FreeMind is a cross-platform mind-mapping software that runs using the Java Runtime Environment (JRE). FreeMind uses MM files to store mind maps during brainstorming, researching, or note-taking. Mind maps are graphical figures containing text, shapes, and branches used to organize ideas. FreeMind software can be run on a web browser and is independent of the operating system used by the computer. Various software such as Freeplane, iMindQ, and MindGenius also use MM file extension to store mind map information.
Other Uses: MM files are also used as macro files by the networked MIDAS signal processing framework, NeXtMidas. These MM macro files contain a list of commands, procedures, and subroutines used in automating processes in the NeXtMidas application. MM files are also used by the mathematical computing application, Mathematica to save matrix market information utilized in exchanging matrices. The Windows-based digital image management and editing program, Kodak EasyShare, use MM files to store cache data of thumbnail images.

How can I open an MM file?

You need a suitable software like FreeMind to open an MM file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MM file directly in the browser:. Just drag the file onto this browser window and drop it.

Online MM Text Viewer

Choose your .mm file to view

or drag and drop it here

Online File Viewer

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How to convert an MM file to JPG, PDF, HTML, DOC, ...

If you want to convert or edit an MM file, you can use our free Online MM File Converter (powered by Convert.Guru):

Just click the "Choose your .mm file to view" button on this page.
Your MM file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Then click the file format (e.g. PDF, JPG, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert MM files:

FreeMind
See the previous paragraphs to learn more about the main application. MM files are often referred to as FreeMind simple text files because this type of file is primarily created or used by this software.
groff (typesetting source file) by The Open Group
groff is a program for Unix-like operating systems designed to output formatted text specified through text and formatting commands. The program stores the source for formatted text using MM files. This file format is classified as Data. Related links: Wikipedia page, Manual
Lightscape
Macro Mania (macro file) by Northstar Solutions
Macro Mania is a macro tool developed by Northstar Solutions. The program is used for productivity and automation by simulating user input using macros.
Mathmatica (matrix market data file) by Wolfram Research
Wolfram Mathmatica is a symbolic mathematical computing program. The program uses MM files to store matrix market data, which are used to exchange matrices. This file format is classified as Data. Related links: Wikipedia page, Start guide
Meme (Virtual Reality World) by Immersive Systems
Meme is a platform-independent standard for networked virtual reality. Meme comes with Metatopia, a multi-user virtual universe. Related links: The Metatopia Project
Metamath (ASCII database file) by Norman Megill
Metamath is a tiny language that can express theorems in abstract mathematics, accompanied by proofs that can be verified by a computer program. The Metamath program is an ANSI C program with a command-line interface. It was used to build and verify the proofs in the Metamath Proof Explorer, as well as to generate its web pages. The program uses MM files to store a database as ASCII data. This file format is classified as Database. Related links: Metamath Proof Explorer, Wikipedia page
Multimate Advantage II (document file) by Softword Systems
Multimate Advantage II was a word processing program developed by Softword Systems for the IBM MS-DOS. The program is now obsolete and is no longer supported. MM files were used by the Multimate Advantage II to store document data. This file format is classified as Page Layout. Related links: Computer history museum, Wikipedia page
NeXtMidas (macro file) by Technology Management Associates
NeXtMidas is signal processing framework developed by Technology Management Associates. The program is used to manipulate and process digital signals through text commands. THe program uses MM files to store macros, which can be used to execute a series of commands. This file format is classified as Developer. Related links: Documentation, Training
Rise of Nations (campaign media file) by Microsoft
Rise of Nations is a historical, real-time strategy game developed by Microsoft. The game stores campaign media data using MM files. This file format is classified as Game. Related links: Wikipedia page, Gameplay video
Xcode (source code file) by Apple
Xcode is a tool to help to create Mac OS X applications by assisting in the migration of code from other languages. MM files contain source code written in Objective-C and C++. This file format is classified as Developer. Related links: Help guide, Developer forums

MM file extension format:

To view or edit MM files you need to know the file format, because it determines how the data in this file is stored. The file format can be determined based on the file extension and the signature (the first few characters of a file). However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So you need a detailed analysis of a file to find out the format and the associated program. Below you will find our evaluation of the MM files:

The MM file type is a very commonly used file extension and mainly uses a defined MM format. The two most popular formats are as follows:

80% of all MM files belong to Freeplane MindMap. The files are using the common file format XML. The Extensible Markup Language (XML) is a simple text-based format for representing structured information: documents, webpages, data, configuration, books, transactions, invoices, and much more. XML defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. These files are text files, so they contain words and text. MM files are between 2 KB and 55 KB in size. The file type was developed 10 years ago and is still in use today. Several words can almost always be found in the files, e.g. , <map version="1.0.1">, node CREATED, MODIFIED and Freeplane. Files like these have the following tags: mindmap, mind, carte, free, mentale, roadmap, struktur and summary.
4% of all MM files are using the well-known JSON file format to store the data. JSON (JavaScript Object Notation) is a lightweight data−interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. If you open these files in a text editor, you can view and read the content yourself. A typical file size is 10 KB. Several words can almost always be found in the files, e.g. root, CGPoint, NSDictionary, objectClass, rootPoint, lineColorHex, BBBBBB, MindNode and children.

All other MM files (16%) have no consistent format, the following 5 formats exist: MatrixMarket matrix data, XML and file. Often described as tree, structure, management, analysis, projects, services, solution, strategy, brucejj, konzept, projekt, data or work. Just click the "Choose your .mm file to view" button on this page to find out what your MM file is.

Technical Data for MM File Extension

File classification:

Simple text file

Related files:

mup, mmap, xmind, smmx, mmm, mm_, mma, nm, ~mn, mind, zip, bm, json, sm, pdf, txt, mpp, mp4, xlf, stp

Related links:

Wikipedia Mind Map Page, Documentation

Mime type:

application/freemind, application/x-freemind, text/x-objcsrc

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: MMJB.EMM
EXEFile: %ProgramFiles%\MusicMatch\MusicMatch Jukebox\mmjblaunch.exe %1

ProgramID: MPlayer
EXEFile: mplay32.exe /play /close %L

ProgramID: mplayer
EXEFile: mplayer.exe /play /close %1

ProgramID: RealPlayer.RAM.6
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe %1

ProgramID: RealPlayer.RAM.6
EXEFile: %ProgramFiles%\Real\RealOne Player\RealPlay.exe %1

ProgramID: RealPlayer.RAM.6
EXEFile: %ProgramFiles%\Real\RealPlayer\RealPlay.exe %1

ProgramID: RealPlayer.RAM.6
EXEFile: %ProgramFiles%\Real\RealPlayer\RealPlay.exe /m audio/x-pn-realaudio %1

ProgramID: mm.File
EXEFile: %ProgramFiles%\CFM\MMDeluxe\mm.exe

ProgramID: FreeMind Map
EXEFile: %ProgramFiles%\FreeMind\Freemind.exe %1

Show all 9 listings To Top

an mm mind map file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with MM files

Associate the MM file extension with the correct application.
Update your software that should actually open mind map files. Because only the current version supports the latest MM file format. Search, therefore, e.g. on the manufacturer website after an available FreeMind update.
To make sure that your MM file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .MM file online - secure, fast, and no downloads needed.