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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
GFS - Extension Details
Date Added: January 02, 2009
File Extension:  .GFS
Description 1: .GFS file extension is linked with Microsoft Office Groove Remote File. This is the file extension for the remote files or file sharing workspaces utilized by Groove a peertopeer collaborative software that is geared towards teams with regularly offline members or those who do not share similar network security clearance/s.
File Type:   Office 2007 Document File
Mode: Binary
Program(s) to Open:  Windows: MS Office Groove
Common:
Extension: