This tools will generate for you powerful wifi passwords.
Free Wifi Password Tool is probably one of the best security tools for your wifi router in the market.
You can generate at any moment with an incredible speed some long random passwords that include characters and numbers and copy it to set it later to your wireless router settings in few simple steps.
Also you can get some extra WiFi data like the ssid or the mac adress of the wi-fi arround you very fast.