THC Hydra is another classic password cracking tool. Strictly speaking Hydra is a network logon password cracking tool, which is actually very fast. A great feature about Hydra is that you can add modules to increase the functinonality of this hacking tool.
Hydra supports various network protocols including, but not limited to AFP, Cisco AAA, Cisco auth, Cisco enable, CVS, Firebird, FTP, HTTP-FORM-GET, HTTP-FORM-POST, HTTP-GET, HTTP-HEAD, HTTP-PROXY, HTTPS-FORM-GET, HTTPS-FORM-POST, HTTPS-GET, HTTPS-HEAD, HTTP-Proxy, ICQ, IMAP, IRC, LDAP, MS-SQL, MYSQL, NCP, NNTP, Oracle Listener, Oracle SID, Oracle, PC-Anywhere, PCNFS, POP3, POSTGRES, RDP, and Rexec.
Quick Tutorial : How to bruteforce gmail/hotmail accounts with Hydra THC in backtrack 5
