Home
Topics
Topics Archive
WinIT Resources
How do I know what programs open which file extensions?

How do I know what programs open which file extensions?

Laura E. Hunter

How can I find out what programs are supposed to open files of certain extension? For example, where can I go to get a definition of a .DAT file, and which program was originally used to open it?
The most comprehensive source for file extension definitions is the File Extension Source, where you can search by the three-letter extension. Some file extensions (like .DAT) are fairly common, however, and are shared by a number of applications.

More News and Tutorials

Articles

Related glossary terms

Terms for Whatis.com - the technology online dictionary

This was first published in September 2003

Join the conversationComment

Share

Comments

Results

Contribute to the conversation

All fields are required. Comments will appear at the bottom of the article.

Back to top

More from Related TechTarget Sites

Windows Server
Exchange
Enterprise Desktop
Cloud computing
SQL Server
IT Channel

Windows Server
- Microsoft delivers patch updates for Windows Server 2012, Windows 8
  
  Microsoft delivered two critical and eight important bulletins in May's Patch Tuesday release, fixing issues in Windows Server 2012 and Office apps.
- Windows Azure Active Directory steps out of the shadows
  
  As Windows Azure Active Directory moves into general availability, we look at how it can help admins manage user authentication in the cloud.
- Steps to read XML files with PowerShell
  
  Wondering how to get PowerShell to read XML files? Our expert explains a few methods you could use.
Exchange
- Configuring federation proxy servers for a hybrid Office 365 deployment
  
  Part of the hybrid Office 365 single sign-on configuration process is correctly setting up federation proxy servers. Here's how.
- Exchange 2013 anti-malware protection: Will you need anything else?
  
  Trusting native Exchange 2013 anti-malware protection to protect your environment is an option, but that doesn't necessarily mean it's the best one.
- Exchange 2013 CU1 migration considerations
  
  Before migrating to Exchange 2013 CU1, you should know about some of the most important updates and how they'll affect your environment.
Enterprise Desktop
- Windows 8 tools build on native Windows 7 utilities with new capabilities
  
  New and updated Windows 8 tools can help admins and users. Windows 8 utilities include functions for backing up and restoring systems.
- Why a Windows security scan is not enough to protect your workstations
  
  A traditional Windows security scan may lure IT into complacency about desktop vulnerabilities, so look at four areas to beef up Windows security.
- Microsoft addresses legacy apps with Windows 8 app compatibility tools
  
  New operating systems are always accompanied by compatibility concerns. Windows 8 app compatibility is no different, or is it?
Cloud computing
- Google Compute Engine prices on par with AWS -- for now
  
  Conventional wisdom has Google and AWS locked in the Price War of the Titans with the launch of GCE, but a deeper look reveals a different truth.
- Limiting the effects of cloud computing outages
  
  After making the case for cloud based on high availability, IT pros are upset by cloud outages. With planning, there are ways to craft a strategy.
- Amazon Redshift an appealing alternative to on-premises data warehouse
  
  Amazon Redshift has intriguing pricing and features, but beware of its differences from a traditional, on-premises data warehouse.
SQL Server
- Adam Machanic talks SQL Saturday
  
  We caught up with Adam Machanic, group leader of the New England SQL Server user group, at SQL Saturday Boston. Find out what he shared with us.
- SQL Server meets database application security
  
  Make sure your SQL Server is secure by studying these general guidelines for secure database applications from SQL Server expert Roman Rehak.
- xVelocity Columnstore Indexes in SQL Server 2012
  
  Curious about how xVelocity can help with your columnstore indexes? Check out this tip from Basit Farooq to find out.
IT Channel
- Avnet, HP team up on big data practice
  
  Avnet, HP are rolling out a big data practice aimed at helping HP partners build out their big data businesses.
- HDS partner program adjusted with account segmentation, rebate changes
  
  HDS is making changes to its TrueNorth partner program in five areas, including account segmentation, rebates, specialization support.
- Brocade partners gain additional IT financing option
  
  Brocade has rolled out its new Brocade Subscription Plus option, which enables monthly payment for a multivendor solution under a single contract.

All Rights Reserved,Copyright - 2013, TechTarget