The DAT extension is basically a generic file format. It comprises of data that may be referenced or opened by using a specific application program. However, some of the DAT format files can be directly opened, most consist of application data that has been referenced by the application when it is running. Thus, most of the DAT extensions are not meant to be opened by the user manually.
Though DAT happens to be a generic file format, it may be utilized by multiple applications. This may make it difficult to figure out as what application should be used to open the DAT file. But, if the DAT file is saved in a text format, the contents of the file can be easily viewed by opening it with a text editor.




602PC Suite
Allegro
AOL Instant Messenger (AIM)
AVG Antivirus
BitDefender
BrainVoyager QX
CA Anti-Spyware
Clarion
Corel WordPerfect
Corel WordPerfect Office
Daqarta
FileAlyzer
Firefox
Inno Setup
KaZaa
LabVIEW
LogiKal
MapInfo
Microsoft Exchange Server
Microsoft Windows
Microsoft Word
Mini-Flash Programming Software
Miranda IM
My Personal Programmer
Nero Multimedia Suite
Norton SystemWorks
Ontrack EasyRecovery
Palm Desktop
Peachtext
Pegasus Mail
PSpice
Safari for Microsoft Windows
SeeYou
Skype
SmartWare
UFOCaptureV2
Winmail Opener
XnView
Yahoo! Instant Messenger
ZEMAX
iPhoto
Original program
Text editor
DataFlex
GLPK
RADIANCE
Opera Mobile


Biblet WMDecode
Message Viewer Lite
Outlook
Windows Mail
WinMail Decoder Pro
Winmail.dat Reader
Klammer
Klammer


GOM Player
MPlayer
Nero
PowerDirector
PowerProducer
River Past Video Cleaner
VCDGear
VLC media player
Elmedia Player
MPlayer
VCDGear
VLC media player
MPlayer
VCDGear
VLC media player

INVedit
MCPlayerEdit
Minecraft
Minecraft server
NBTExplorer
MCPlayerEdit
Minecraft
Minecraft server
NBTExplorer
MCPlayerEdit
Minecraft
Minecraft server
NBTExplorer

Building Architect Tool
DatGen
SimCity 4 Deluxe Edition
SimCity 4 Deluxe Edition

Microsoft Windows

Inno Setup uninstaller
In addition to the problem described above, i.e. the lack of the appropriate application to support the .DAT file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .DAT file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .DAT file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.
There may be several reasons why you cannot open the file with .DAT extension. Directly on this website you can find a solution of the most common problem with the .DAT file – that you do not have on your computer the appropriate program to open the file.