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

The full specifications of various file formats.

Names many file formats and their extensions.

An extensive listing of file name extensions with brief description.

Includes descriptions and suggestions for software (free and pay) that handle them on Windows and MacOS.

Simple alphabetical listing of file extensions and descriptions, and in many cases, the name of the associated program.

Contains information about many data formats.

Database of file extensions with information about each file type.