MacroModel molecular mechanics file
File type: Various data file
An .mmd file is a molecular mechanics data file used by MacroModel.
It stores molecular structure and calculation-related data in the MacroModel molecular mechanics format.
Found 8 different file type records with the same mmd filename suffix.
File type category:
Various data file
Date updated: October 6, 2026
MacroModel is molecular modeling software originally developed at Columbia University and now provided by Schrödinger. An .mmd file belongs to the software's molecular mechanics workflow and can contain data used to define or process a molecular model.
The format is intended for use by specialized scientific software rather than as a general-purpose document. The MIME types associated with it include chemical/x-macromodel-input and chemical/x-macromodel.
Open an .mmd file with MacroModel, using the version of the Schrödinger software that supports this format. MacroModel is specialized scientific software and may require a licensed installation.
If MacroModel is not available, a general text editor may show the file's underlying contents, but it will not interpret the molecular model or calculation data.
Open the file in MacroModel and use the program's save or export commands to produce a molecular structure or data file in another format supported by the installation.
The conversion result depends on the contents of the file and on the formats supported by the installed version of MacroModel.
File type category:
Graphics file
Date updated: September 19, 2018
Record marked as obsolete and not updated for a long time.
The mmd file extension is associated with the Cumulate Draw application, developed by Autodesk. The Cumulate Draw was transitioned to become Autodesk Labs Project Draw that was discontinued in 2010.
The mmd file stores drawing in editable MMD format.
Use compatible tools to work with *.mmd files.
Probably can be exported to other formats.
Software applications that handle other tasks involving mmd files:
Multiplatform
Project Draw
File type category:
Document file
Date updated: June 26, 2019
Record marked as obsolete and not updated for a long time.
The mmd file extension is associated with the DocsAlive a software for Microsoft Windows that allows users to create video, audio, animation, text, drawing, and pictures in one document.
The mmd file contains multimedia document.
Use DocsAlive to open .mmd multimedia documents.
Probably can be exported to other formats.
Software applications that can open mmd files:
Microsoft Windows
DocsAlive
Software applications that can edit mmd files:
Microsoft Windows
DocsAlive
Software capable of saving mmd files:
Microsoft Windows
DocsAlive
Software apps that create mmd files:
Microsoft Windows
DocsAlive
File type category:
Various data file
Date updated: November 12, 2018
The mmd file extension is associated with the mAirList metadata format.
The mAirList Metadata file (.mmd) contains metadata about a single audio file, such as artist and title, cue point settings, ending type, and any user defined data fields.
The mmd file is a universal, extensible replacement for internal audio file tags (for example, ID3 or OGG tags), and allows 'tagging' of audio file formats (like .wav) which do not support internal file tags.
Use compatible tools to work with *.mmd files.
Probably cannot be converted to other formats.
File type category:
Database file
Date updated: October 10, 2018
Record marked as obsolete and not updated for a long time.
The mmd file extension is associated with the mangodata an e-learning software for Microsoft Windows operating system that allows users to learn databases, developed by MightyMango.
The mmd file stores multi-user database.
Use mangodata to open .mmd multi-user databases.
Probably cannot be converted to other formats.
Software applications that can open mmd files:
Microsoft Windows
mangodata
Software applications that can edit mmd files:
Microsoft Windows
mangodata
Software capable of saving mmd files:
Microsoft Windows
mangodata
Software apps that create mmd files:
Microsoft Windows
mangodata
Software applications that handle other tasks involving mmd files:
Microsoft Windows
mangodata
File type category:
Various data file
Date updated: September 26, 2019
Record marked as obsolete and not updated for a long time.
The mmd file extension was also used in old program from Nortel called Media Processing Server Studio for one of the data files.
It was a graphical software tool that is used to create, edit, and manage audio elements of menu prompts in the Media Processing Server (MPS) environment.
File type category:
Text file
Date updated: October 21, 2026
The format is human-readable and normally consists of a diagram declaration followed by text-based diagram definitions. Syntax identifies nodes, relationships, labels, styling directives and optional configuration. Because the source is text, it is suitable for version control, code review and automatic documentation workflows.
Mermaid was created as a JavaScript-based diagramming library for generating diagrams from text in web pages and documentation. The .mmd extension is a commonly used convention for standalone Mermaid source files, although some applications also use .mermaid or embed Mermaid definitions in Markdown documents.
Mermaid source is interpreted by the Mermaid rendering engine rather than by a fixed binary file specification. Rendering behavior can therefore vary with the Mermaid version, enabled diagram types, security settings and optional configuration. A file may reference external assets or styling only when the selected application supports those features.
On Windows, macOS and Linux, files can be edited in general-purpose text editors or previewed with Visual Studio Code extensions and Mermaid-aware documentation applications. Browser-based tools such as Mermaid Live Editor work across platforms, while command-line rendering is available through the Node.js-based Mermaid CLI.
To open the source, use a text editor such as Notepad, Notepad++, Visual Studio Code, Sublime Text or Vim. These programs are available, or have equivalents, on Windows, macOS and Linux. Opening the file as text lets you inspect and edit the Mermaid definitions.
To see the rendered diagram, paste the contents into Mermaid Live Editor in a web browser, or install Mermaid preview support in Visual Studio Code. You can also place the definition in a Mermaid-enabled Markdown or documentation application, or render it locally with Mermaid CLI.
Mermaid source can be rendered to SVG, PNG or PDF using Mermaid CLI, Mermaid Live Editor or compatible online services such as Kroki. These operations generate a visual representation; they do not preserve the editable Mermaid source in the output image or PDF.
To create a Mermaid file from another diagram format, recreate the diagram using Mermaid syntax or use a tool that supports the relevant import and export formats. Some diagram editors can import or export Mermaid text, but conversion support varies. Keep the original source file because exported graphics generally cannot be converted back into an equivalent, fully editable Mermaid definition automatically.
File type category:
Database file
Date updated: September 25, 2018
The mmd file extension is related to the Summit Membership Manager (also known as Summit Event Manager), an events management software for Microsoft Windows.
The mmd file stores events database.
Use Summit Membership Manager to open *.mmd database files.
Probably cann be converted to anything else.
Software applications that handle other tasks involving mmd files:
Microsoft Windows
online = can be converted online at 101convert.com
Online conversions and file conversion information are provided by 101convert.com.
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