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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
MSG - Extension Details
Date Added: July 12, 2008
File Extension:  .MSG
Description 1: .MSG file extension is linked with FoxDoc Message [FoxPro]. This file extension is for the message documents utilized by FoxDoc a feature or application included in Visual FoxPro. Also known as VSP, Visual FoxPro is a programming language that concentrates on procedural, datacentric and objectoriented programming. It is used to write Windowsbased desktop database applications, but it can also be used to write middleware, fat client and web applications.
Description 2: .MSG file extension is linked with PMMail 2000 email message File. This is the document file which contains the email messages generated by PMMail 2000 a powerful and flexible email application which provides extensive support for rising internet standards that offers userfriendly interface. Other features include: simple to understand interface both expert and newbie, costeffective and timesaving. .MSG file extension and PMMail 2000 are owned and developed by Blueprint Software Works Inc.
Description 3: .MSG file extension is linked with OS/2 Help Message File. This is the file extension for the help message files utilized by OS/2 an operating system which was initially developed by IBM and Microsoft, and then later exclusively by IBM. OS/2 stands for Operating System/2 which was part of IBMs PS/2 [Personal System/2] line of 2nd generation PCs. IBM no longer markets OS/2 and nowadays, it is being marketed by Serenity Systems under the name 2ComStation.
Description 4: .MSG file extension is linked with Microsoft Exchange Mail Document. This is the file extension for the mail documents utilized by Microsoft Exchange the messaging system that has been designed to specifically meet the challenges of emailing and to address the needs of varying clients. Major features include: electronic mail, contacts, calendaring and tasks; it also has support for webbased and mobile access to information, as well as support for data storage.
File Type:   Document File
Mode: Binary
Program(s) to Open:  Windows: Microsoft Exchange Server 2007
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