MD5

MD5, Message-Digest algorithm 5 is a widely-used cryptographic hash function with a 128-bit hash value.

It is described in RFC 1321. --> MD5

GData: An Online MD5 Hash Database

"GDataOnline.com is the world's largest, fastest, online based MD5 reverse lookup project currently sporting 166 million unique entries"


 * http://gdataonline.com/seekhash.php


 * http://www.md5hashes.com/search.php


 * Project RainbowCrack