MAR

mar icon

Microsoft Access report shortcut

File type: Settings, options, themes or skins file, Email attachment blocked file, Microsoft Office file

A mar file extension is related to the Microsoft Access a relational database management software. A mar file stores report shortcut.

Found 7 different file type records with the same mar filename suffix.

What is mar file?

The mar file extension is associated with Microsoft Access.

Microsoft Access is a database management system, part of Microsoft Office Suite, developed by Microsoft Corporation.

The mar files contain a shortcut to a report within a Microsoft Access database.

How to open mar file?

Use Access to work with *.mar files.

Suggested software to open mar file:

Associated software actions with the mar file

Software applications that can open mar files:

Microsoft Windows

Software apps that create mar files:

Microsoft Windows

Software applications that handle other tasks involving mar files:

MARC 21 bibliographic data

File type category:
Text file

Date updated: December 31, 2024

Record marked as obsolete and not updated for a long time.

The mar file extension is related to MARC 21 Format.

This format for Bibliographic Data is designed to be a carrier for bibliographic information about printed and manuscript textual materials, computer files, maps, music, continuing resources, visual materials, and mixed materials.

Bibliographic data commonly includes titles, names, subjects, notes, publication data, and information about the physical description of an item.

MIME types:
text/plain

How to open mar file?

Use compatible tools to work with *.mar files.

How to convert mar file?

Probably cannot be converted to other formats.

Suggested software to open mar file:

Associated software actions with the mar file

Software applications that can open mar files:

Microsoft Windows

Apple macOS / Mac OS X

Software applications that can edit mar files:

Microsoft Windows

Apple macOS / Mac OS X

Software capable of saving mar files:

Microsoft Windows

Apple macOS / Mac OS X

Mariner Calc spreadsheet file

File type category:
Spreadsheet and workbook file

Date updated: October 2, 2026

Mariner Calc is a spreadsheet application developed by Mariner Software for Mac OS X and macOS. A .mar file contains a spreadsheet created with the application.

The file belongs to Mariner Calc's native spreadsheet format and is intended to preserve the workbook's data for reopening and editing in the application.

How to open mar file?

Open the .mar file with Mariner Calc on Apple macOS or Mac OS X. If the file does not open by double-clicking it, start Mariner Calc and use its Open command.

How to convert mar file?

Open the .mar file in Mariner Calc and use the application's export or Save As command to create a copy in one of the formats supported by that version. Conversion options depend on the installed version of Mariner Calc.

Suggested software to open mar file:

Associated software actions with the mar file

Software applications that can open mar files:

Apple macOS / Mac OS X

Software applications that can edit mar files:

Apple macOS / Mac OS X

Software capable of saving mar files:

Apple macOS / Mac OS X

Software apps that create mar files:

Apple macOS / Mac OS X

Mozilla archive

File type category:
Archive and compressed file

Date updated: June 27, 2025

The mar file extension is associated with applications like Firefox, Thunderbird, Seamonkey etc. developed by Mozilla Corp.

The mar file contains archive with compressed binary diffs in bzip2 compression format.

How to open mar file?

Probably not meant to be accessed by the user.

How to convert mar file?

Probably cannot be converted to anything else.

Suggested software to open mar file:

Associated software actions with the mar file

Software apps that create mar files:

MSN archive

File type category:
Archive and compressed file

Date updated: May 29, 2019

Record marked as obsolete and not updated for a long time.

The mar file extension was also used for some compressed archive format used by old MSN Explorer a web browsing utility for Microsoft Windows. These file stored bitmaps, html files and other data.

Suggested software to open mar file:

Associated software actions with the mar file

Software applications that handle other tasks involving mar files:

Microsoft Windows

Pegasus Mail attribute record file

File type category:
Various data file

Date updated: October 2, 2026

Pegasus Mail, developed by David Harris, is an email client with versions for Microsoft Windows and, historically, MS-DOS. The Windows edition uses MAR files as part of its internal storage.

A MAR file contains attribute records for individual users and messages in Public Folders. In earlier versions of Pegasus Mail, these folders were also called Systemwide folders.

The file is supporting data for Pegasus Mail rather than a standalone document. It should normally be kept with the related public-folder data so that Pegasus Mail can retain user and message attributes.

How to open mar file?

Pegasus Mail on Microsoft Windows reads MAR files as part of its public-folder storage.

A MAR file is not intended to be opened directly in a text editor or another general-purpose application. If Pegasus Mail does not recognise it, keep it in the folder where the program created it and check that the related public-folder data is also present.

How to convert mar file?

There is no useful standalone conversion for a Pegasus Mail MAR file. It contains internal attribute records rather than an independently usable document.

To preserve or move the associated messages, use Pegasus Mail's folder or message-management features. Do not rename or edit the MAR file as a way of converting it.

Suggested software to open mar file:

Associated software actions with the mar file

Software applications that handle other tasks involving mar files:

Microsoft Windows

WebSphere Business Modeler process model template

File type category:
Various data file

Date updated: October 2, 2026

MAR files are associated with IBM WebSphere Business Modeler, a business modeling and analysis application for Microsoft Windows. They store templates for process models used in the application.

A process model template provides a reusable starting point for modeling business processes in WebSphere Business Modeler. The file is part of that application's project and modeling workflow rather than an independent interchange format.

How to open mar file?

Open the .mar file with IBM WebSphere Business Modeler on Microsoft Windows, using the application's file-open command.

How to convert mar file?

Open the file in WebSphere Business Modeler and use the application's save or export functions to create a supported output format.

Suggested software to open mar file:

Associated software actions with the mar file

Software applications that can open mar files:

Software applications that can edit mar files:

Software capable of saving mar files:

Software apps that create mar files:

Related file extensions