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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
ENT - Extension Details
Date Added: April 02, 2009
File Extension:  .ENT
Description 1: .ENT file extension is linked with HyperChem Molecule File. This is the basic file format for the molecule file utilized by HyperChem a sophisticated molecular modeling tool that is known for its ease of use, quality and flexibility. It unites 3D visualization and animation, molecular mechanics and dynamics. HyperChem is owned and developed by Hypercube, Inc.
Description 2: .ENT file extension is linked with AIM [AOL Instant Messenger] File. This is the file extension utilized by AIM AOL. AIM or AOL Instant Messenger is a nonexclusive application which offers instant messaging to all internet users across the globe. It allows users to communicate privately, have personalized text messages and has a tool that tells whether user is online. .BOX file extension and AIM are owned and developed by AOL.
Description 3: .ENT file extension is linked with Brookhaven PDB Molecule File. This is the file extension for the molecule file utilized by Brookhaven and it is a specialized application. ENT file extension is associated with MolMol a molecular graphics program for analysis, display and manipulation of 3D structures of biological macromolecules. It emphasizes on NMR solution structures of nucleic acids and proteins. This program provides graphical userinterface with dialog boxes, menus and online support. It is owned and developed by ETH Zurich.
Description 4: .ENT file extension is linked with Egseing Engineering HK Data File. This is the file extension for the data file utilized by Egseing Engineering HK a conversion program for processing packet data files generated with LEGSPC EGSE and then converts them into FITS file format. For Direct Mode data, there are 2 output files that are generated: a FITS event list and the corresponding HK file.
Description 5: .ENT file extension is linked with External Entity. This is the text file that contains the entity declarations and the parameters for a particular set of tags identified in a DTD. It is often referenced by SGML and XML documents. An entity usually consists of a sequence of one or more characters that may be encapsulated in a declaration or encoded and stored externally in a text file.
File Type:   Internetrelated File
Mode: ASCII
Program(s) to Open:  Windows & Mac: any text editor
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