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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
SAT - Extension Details
Date Added: January 01, 1970
File Extension:  .SAT
Description 1: .SAT is a file extension for the 3D model that is saved in the ACIS solid modeling format of Spatial. It is used for storing threedimensional geometry info in standard text file. With this file format, users can exchange 3D data between and/or across multiple systems. Many 3D CAD programs support this type of ACIS SAT model file.
File Type:   3D Image file
Mode: Binary
Program(s) to Open:  Windows: AshlarVellum Cobalt, Argon or Xenon; Autodesk AutoCAD; IMSI TurboCAD; IronCAD; Kubotek CADKEY; Spatial ACIS Modeler Macintosh: AshlarVellum Argon, Cobalt or Xenon; IMSI TurboCAD, Spatial ACIS Modeler Unix: Spatial ACIS Modeler
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