| DaubNET File Format Collection The full specifications of various file formats. - read more | |
| File Formats Magic Database Contains information on main file formats as well as an FFID registry and a signature file permitting the identification of files from their contents. Also contains tips on how to design new file formats. - read more | |
| File-Extensions.org Large computer file extension library with detailed explanation of each file type with links to free or associated software programs downloads. - read more | |
| FileInfo.com Database of file extensions with information about each file type. - read more | |
| FileSuffix.com A searchable filename extension database. - read more | |
