Tells you what a file is, and what program created it. All you have to do is right-click on the file, and select 'Bloody Hell! What's this File Type?' (other text available if you're sensitive). If you have a file extension and you have no idea which application it is for, try this search. If we list the software itself we'll show it too. Enter the file extension to find, with or without a leading period. e.g .doc, .fll, .rpp, .xml etc. If more than one application matches, we'll show you a list.