Brute Force Password Cracker
Can you crack WiFi passwords? If so how?
Depends on the protocol, afaik (i'm not a haxxxor xd).
This might be a good read though: https://en.wikipedia.org/wiki/Wireless_security
Finally, don't forget, most wireless routers still have their default passwords in place. If you can get the login page, you can just try the default password.
if I remember correctly