Cain & Abel – http://www.oxid.it/cain.html
MD5 and SHA-1 Hash generator – http://www.md5-lookup.com/
Top 10,000 most commonly used passwords – http://xato.net/passwords/more-top-worst-passwords/
This video is an introduction to the science behind password cracking. If your curious about what it’s all about, then this video is for you!
500 Worst Passwords of all time:
Appnimi PDF Unlocker:
Password complexity cracking stats: