Computer Forensics: Computer Crime Scene Investigation (With CD-ROM) (Networking Series)

File Extensions (http://filext.com/)

File extensions are often used to determine the program that created the file. Although there is no guarantee that users will not rename files and/or associate odd extensions with particular programs, this site lists some fairly standard associations.

What Is. . .Every File Format in the World (http://whatis.techtarget.com/Flat_Files/WhatIs_File_Format_A/0,281899,,00.html )

This is a list of file name extensions or suffixes that indicate the format or usage of a file and a brief description of that format.

Wotsit’s Format (http://www.wotsit.org/)

This site contains file format information, including header/foot signatures, on hundreds of different file types and all sorts of other useful programming information: algorithms, source code, specifications, and so on.