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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
ADI - Extension Details
Date Added: January 01, 1970
File Extension:  .ADI
Description 1: .ADI file extension is linked with Advantage Database Server Index File. This is the file extension for the index file utilized by Advantage Database Server an application designed specifically for ISVS [Independent Software Vendors], small and medium businesses, and commercial software application developers that are looking for powerful database solution that is easily managed, deployed and integrated. .ADI and Advantage Database Server are owned and developed by Sybase Inc.
File Type:   Database File
Mode: Binary
Program(s) to Open:  Windows: Advantage Database Server
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