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File Extensions

I've always wanted to have a list of file extensions so I could easily look up what application is associated with a particular file extension. Years ago, I started putting a list together, but I never felt I had enough extensions to put it up some place as a reference. Now, I've discovered that someone has beat me placing it on the web. is a great starting point into a list of file extensions. And if you just want a complete list, that's available here: