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.
Oh yeah, if you don't have permission, cracking is illegal
if I remember correctly