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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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DAT - Extension Details
Date Added: January 11, 2008
File Extension:  .DAT
Description 1: .DAT file extension is linked with Nero BackITUp Drive Image. Nero BackITUp is an application that automatically backsup user files easily and quickly into userpreferred storage media. It also produces bootable discs to help restore computer systems in case of emergencies. .DAT file extension and Nero BackITUp are owned and developed by Nero AG.
Description 2: .DAT file extension is linked with Yahoo! Instant Messenger Settings File. This file contains the settings utilized by Yahoo! Instant Messenger a free service which allows users to see their contacts that come online and to send them instant messages. Other features include: email alerts, events alerts on Yahoo! calendar, offers firewall support, save and print conversations, quick access to stocks/sports/news, autocreate chat room, Launchcast Radio, Yahoo! Games and Yahoo! Audibles, allows users to user webcam and PCtoPC calls, and more.
Description 3: .DAT file extension is linked with Clarion DOS Database. It is the file extension for the database file utilized by Clarion. Clarion is a fast and efficient database application that offers users a 4GL language, C++ and Modula2 compilers. The application has a single optimizer for all languages it carries and they can be integrated within one application.
Description 4: .DAT file extension is linked with AOL Messenger [AIM] BFTS Database File. This is file extension for the database file utilized by AOL Instant Messenger 6. 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.
Description 5: .DAT file extension is linked with VCD Video file. This file supports the video streaming from a VCD [video CD] disc. It is usually saved as an MPEG1 or MPEG2 file format and contains actual video data which is played from the CD. VDC players should only play the video from the DAT files and without opening it manually. The standard format is supported by various applications. .DAT file extension is associated with other applications such as CyberLink and NERO.
Description 6: .DAT file extension is linked with Act of War Game File. This is a packaged file which contains the games data such as textures, music, maps, models and sounds, among many others. Act of War: Direct Action is developed by Eugen Systems and published by Atari Inc. It is a realtime strategy game released in 2005 and offers features such as: numerous gameplay elements, realistically destructible buildings, ability to create barricades, and the ability to use various units for diverse game strategies.
Description 7: .DAT file extension is linked with data file from various applications and it can either be a binary or text data. .DAT is a generic data file which also means it can only be accessed by the application that created it. If the data file is textbased, it can be viewed through a text editor. There are many applications that create, reference or open DAT files such as: Corel WordPerfect, Microsoft Visual Studio, SoftVelocity Clarion, Runtime GetDataBack, Nullsoft Winamp, MapInfo Software, Nero ShowTime and Ontrack EasyRecovery.
Description 8: .DAT file extension is linked with SeeYou Waypoint. This is the file extension for the waypoint utilized by SeeYou a highlyfeatured glider pilots program that provides users/pilots to plan tasks prior their flights, manage waypoint lists and upload them to a pocket pc or related devices. After a flight, this application allows users/pilots to download their flights from a GPS, see their flights on maps, explore details of flights via Statistics and review them in 3D. SeeYou is owned and developed by Naviter d.o.o.
Description 9: .DAT file extension is linked with Skype Local Store File. This is the file extension for the local store file utilized by Skype a free software that works seamlessly works with a users internet connection. It offers free SkypetoSkype calls, chats, video calls, all for no cost. Local and long distance, as well as international calls to phones and mobile phones are also available at reasonable rates. .EZLOG file extension and Skype are owned and developed by Skype Limited.
Description 10: .DAT file extension is linked with Daqarta Extended Audio Data File. This is the file extension utilized by Daqarta for its data files. Daqarta is an application that utilizes Windows sound card to supply highperformance FFT spectrum analysis and waveform, signal averaging, color spectograms, advanced options and signal generation. This application also offers easy calibration of line sensitivities and volume controls which help users read signal values in Volts or any userdefined units. .DAT file extension and Daqarta are owned and developed by Interstellar Research.
Description 11: .DAT file extension is linked with Runtime Software Disk Image. This file extension is for the disk image rescue and backup utilized by Runtime Software DriveImage XML a reliable and easytouse imaging, partitions and logical drives application. It utilizes Microsoft VSS that allows users to generate safe "hot images from current drives. These images are stored in XML which allows users to process them via 3rd party tools. Restoring images into drives do not require rebooting. DriveImage XML utilizes 2 compression levels which make the application faster. It runs on Windows XP, Windows Vista and Windows Server 2003 only.
Description 12: .DAT file extension is linked with Novell NetWare Message File. This is the file extension for the message file utilized by Novell NetWare a network OS [operating system] developed by Novell Inc. It initially utilized cooperative multitasking to be able to run various services on a computer, and its network protocols were based on archetypal Xerox XNS stack.
Description 13: .DAT file extension is linked with TomTom Navigator Traffic Data. This is the file extension for the traffic data is utilized by TomTom Navigator [particularly GPS] an application that is easy to install, contains detailed maps of 20 Western Europe countries, has clear and accurate visual and voice instructions, has easy call handling, and offers direct navigation to contacts that are stored in the users address book.
Description 14: .DAT file extension is linked with XnView Filter File. This file extension is utilized by XnView in filtering specific files. XnView is a freeware utility for converting and viewing graphic files. XnView offers users the following features: resize, rotate and crop support; lossless crop and rotate support; modify colors; IPTC editing; import around 400 graphic file formats and export around 50 graphic file formats; support for multipage animated GIF and ICO, and TIFF; etc. XnView is owned and developed by Pierre Gougelet.
Description 15: .DAT file extension is linked with Miranda IM Profile File. This is the file extension for the profile file backup utilized by Miranda IM. May contain contact list, history, visible/invisible list, settings and others. Miranda IM is an instant messaging client for Windows. It offers multiprotocol support which allows other IM client users to connect to Miranda IM. It is very light on system resources as well as very fast to connect. Miranda IM doesnt require installation and can fit a single floppy disk or USB flash drive. It also offers multiple plugins of up to 350. And it is one of the most customizable and flexible IM clients of today.
Description 16: .DAT file extension is linked with BitDefender Data File. It is the file extension for the data file utilized by BitDefender an antivirus, antispyware and antispam application that is ranked #1 and winner of "Top TenReviews Gold Award. BitDefender is one of the most outstanding PC defense software of 2008. It offers users the following features: userfriendly interface; scans all existing computer files, incomingoutgoing emails, internet/network traffic and IM transfers.
Description 17: .DAT file extension is linked with Norton Disk Doctor Undo File. This is the file extension for the undo file generated/utilized by Norton Disk Doctor [NDD]. NDD is integrated in the Norton SystemWorks a systemboosting solution that solves many of users personal computers problems, keeps computers healthy and running their peak. This application automatically diagnoses, fixes and removes unwanted internet clutters like web files, cookies and others. .DAT file extension and Norton Disk Doctor and Norton SystemWorks are owned and developed by Symantec Corporation.
Description 18: .DAT file extension is linked with Apple Safari Dictionary File. This is the file extension for the dictionary file utilized by Apple Safari an internet browser that offers simple and yet elegant userinterface. Other features include: easy bookmarks, fast performance, popup blocking, tabbed browsing, inline find, autoform filing, resizable text fields, builtin RSS, security and private browsing. Safari is owned and developed by Apple Inc.
Description 19: .DAT file extension is linked with Internet Explorer Data File. This is the file extension for the data file utilized by Internet Explorer. Microsoft Internet Explorer is a widelyused internet browser. It provides users with enhanced navigation via tabbed browsing, advanced printing, web search via toolbar, easy discovery, reading and subscriptions to RSS feeds and many others. .DUN file extension and Internet Explorer are owned and developed by Microsoft Corp.
Description 20: .DAT file extension is linked with Windows Registry Hive a group of values, keys and subkeys in the registry which carries a set of supporting files containing data backups. The .DAT file extensions in Windows versions vary: Windows 98 has registry file names User.dat & System.dat; Windows Millennium edition has registry file names User.dat, System.dat and Classes.dat. Registry access keys for Windows NT, XP, 2000, Vista and Windows Server 2003 are controlled by an administrator.
Description 21: .DAT file extension is linked with Nero CD Speed Results File. This file contains the released results that are measured by Nero CD Speed. NERO is a bestselling multimedia suite which allows users to easily manage and organize multimedia files, create and edit new digital content, and offers users simple and efficient tools for creating projects. .DAT file extension and NERO are owned and developed by Nero AG.
File Type:   Document File
Mode: Binary
Program(s) to Open:  Windows & Mac: Nero
Common:
Extension: