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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:
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AMXX - Extension Details
Date Added: April 12, 2008
File Extension:  .AMXX
Description 1: .AMXX file extension is linked with AMX Mod X Plugin File. This is the plugin generated for AMX Mod X which is a metamod plugin for Halflife and other related PC games. .AMXX files are designed specifically for server administration purposes. It is used for providing custom features such as gameplay modifications and statistics tracking. AMX Mod X supports the following Halflife versions: CounterStrike, Natural Selection, Day of Defeat, The Specialists, Earths Special Forces and Team Fortress Classic. .AMX file extension is utilized by plugins saved by AMX Mod, an AMD Mod X predecessor.
File Type:   Plugin File
Mode: ASCII
Program(s) to Open:  Windows & Mac: AMX Mod X
Common:
Extension: