Every File Extension in the World -- almost!
This is a resource for looking up file extension names or suffixes. By browsing alphabetically, you will be able to find the format you are looking for and learn what program it is associated with. In general, if you have the program that uses that file extension, that program can be used to open or otherwise use the file.
You will also find a handy link on each file extension page that will allow you to ask IT Knowledge Exchange members for more information about the file you are looking up.
Many people have contributed to this ever-growing list and we thank them! If you know of a file extension that should be added to this list, please e-mail us and we'll add it.