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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
67C - Extension Details
Date Added: January 01, 1970
File Extension:  .67C
Description 1: File extension .67C is associated with FLEXnet Manager. This refers to a webbased program software license management system. The FLEXnet Manager application is able to get organizations to centrally manage and track FLEXwrapped Windows, IBM LUM and FLEXenabled license usage within various departments as well across a particular entity or organization.
File Type:   Text file
Mode: ASCII
Program(s) to Open:  Associated with the firm Acresso Software Inc.
Common:
Extension: