Equivalents: unix: echo -n "string"|md5sum jfnc: calcMD5("string") TEST Data: Control String (quotes not included): "md5" echo -n "md5" |md5sum 1bc29b36f623ba82aaf6724fd3b16718 echo -e "md5\r" |md5sum 5821e393b5fdbbb810cf362c9e28b0d5 echo -e "md5\r\n" |md5sum a099906ac764f5824f06133be0f678e6 echo -n -e "md5\r\n" |md5sum 5821e393b5fdbbb810cf362c9e28b0d5 Control String: Void/Blank: echo -n ""|md5sum d41d8cd98f00b204e9800998ecf8427e Online Tools (reverse md5/sha1 search): http://md5.rednoize.com/ http://md5.crysm.net/ http://us.md5.crysm.net/ http://md5.benramsey.com/ (http://benramsey.com/code/md5/) http://gdataonline.com/seekhash.php http://www.tmto.org/ (http://www.md5lookup.com/) Online Tools (reverse LANMAN hash search): http://lasecwww.epfl.ch/~oechslin/projects/ophcrack/ Online Tools Search GET variables: http://us.md5.crysm.net/find?md5=1bc29b36f623ba82aaf6724fd3b16718 md5 Projects and Links: http://en.wikipedia.org/wiki/MD5 http://linardy.com/md5.php http://ilia.ws/ http://search.cpan.org/~blwood/Digest-MD5-Reverse-1.3/lib/Digest/MD5/Reverse.pm JavaScript Projects: http://pajhome.org.uk/crypt/ http://www.pajhome.org.uk/crypt/md5/index.html JavaScript MD5 Login System: http://pajhome.org.uk/crypt/md5/auth.html All you php users out there remember to further obfuscate your basic hashes, for example: md5 -> append salt -> sha1 -> save pass and salt for future checks. It is also a good idea to use javascript to do some quick hashing before sending to the server if your not using a secure connection. To Organize: http://milw0rm.com/ http://gdataonline.com/ http://hashreverse.com/ http://us.md5.crysm.net/ http://nz.md5.crysm.net/ http://ice.breaker.free.fr/ http://hashchecker.com/ http://md5.rednoize.com/ http://md5.xpzone.de/ http://md5encryption.com/