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Thousands of file extensions with detailed information about each file type, including a list of programs that open the files.

Large computer file extension library with detailed explanation of each file type with links to free or associated software programs downloads.

Having problems opening a file? We will help you find products that can open, view or play your files.

Find which Windows software can open a file with specified extension

Find out information about files you do not recognize on your computer with their extension name. Download the best software to open your un-recognized file

OpenDNS makes networks in homes, schools and businesses safer, faster, smarter and more reliable through Web content filtering, security and navigation services.

Cool websites, cool software apps, howto articles and Internet tips.

Find the software you

On the FileExtension.info you will find information about file extensions and programs that support specific types of files.

Thanks to File-Extension.org, you will find out what program you should use to open the files with unknown extensions. In addition, you will find here information about file conversion.

AcqNotes provides a simple and easy source of Department of Defense (DoD) acquisition related information for Aerospace personnel.