BFG (Brute Force Generator)UPDATE: Mac OS X precompiled version is now available (compiled on an Intel Macbook with Mac OS X 10.5.8)! BFG is a brute-force password generator for thc-hydra, which doesn't have a brute-force module in the original version, and can only perform dictionary attacks.
BFG adds this functionality to hydra, possibly making it the best tool for security testing/hacking.
By the way, please remember that this tool is still in early stage so it maybe has some bugs. If you find any, please let me know.