All Sites

» Almost Every File Format in the World

Names many file formats and their extensions.

http://www.ace.net.nz/tech/TechFileFormat.html

» DaubNET File Format Collection

The full specifications of various file formats.

http://www.daubnet.com/en/file-formats

» Dot What?!

Database of file extension information. Supports users comments and submissions. Includes discussion forum.

http://dotwhat.net/

» FILExt

Searchable database of file extensions for data formats, with information and notes on each.

http://filext.com/

» 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.

http://www.magicdb.org/

» File-Extensions.org

Searchable file extension list including descriptions and associated applications.

http://www.file-extensions.org/

» FileInfo.com

Database of file extensions with information about each file type.

http://www.fileinfo.com/

» FileSuffix.com

A searchable filename extension database.

http://www.filesuffix.com/

» Filerecon Project

Developing a program to automatically identify files from their content. Project news, FAQ, and download. [GPL]

http://www.computec.ch/projekte/filerecon/

» Macintosh Type/Creator Database

A database of windows file extension codes with correlating Macintosh Type/Creator code pairs.

http://homepage.mac.com/tcdb/

» Sustainability of Digital Formats Planning for Library of Congress Collections

Provides information about digital content formats from the viewpoint of maintaining sustainable and accessible archives.

http://www.digitalpreservation.gov/formats/

» UK National Archives PRONOM Technical Registry

Resource for those requiring definitive information about the file formats, software products and other technical components required to support long-term access to electronic records.

http://www.nationalarchives.gov.uk/PRONOM/

» Uniblue File Extension

Searchable database of file extensions, explaining what they are used for and which programs they are associated with.

http://www.file-extension.com/

» Webopedia - Data Formats

Contains information about many data formats.

http://webopedia.com/Data/Data_Formats/

» Wotsit's Format

Detailed file formats and data formats for programmers. A large collection of programming resources with detailed information.

http://www.wotsit.org/