FILExt - The File Extension Source Welcome to FILExt, the file extension source. FILExt is a detailed database of file extensions and programs that use them. FILExt is not a general support site. A search on the database here might very well result in multiple possibilities; it will b FILExt.com is the file extension source. Here you'll find a collection of file extensions; many linked to the programs that created the files. This is the FILExt home page. extensionextensionsfile By jdrsantosin Public bookmarkswith extensionsfilefile_formatsformatsprogrammingby 7 users