File extensions are usually three, four or more letter codes at the end of computer file names that tell to operating system (Microsoft Windows Vista, Windows XP, Windows 95/98/ME/2000,MAC OS X, Linux and Unix operating systems etc.) what kind of file they are dealing with. Tell to OS which applications can automaticaly open or edit the file.

If you find a file in your computer with an unknown file extension, you can look up the information about desired file extension and its file associations using File-extensions.org website.

Evo Networks recomends File-Extensions.org to find the right application to open that random file that you can't seemt o open. Go Here.