WIFI Auditor is a free program used to audit the security of some wireless networks, if a specific vulnerability is found it will give you the password of the WiFi network and you can plug and play (after asking permission, of course).
Download the latest version(WiFi Auditor 1.40.1.0):
http://wifiauditor.xyz
Ideally WiFi Auditor is not meant to be a WiFi hack tool but it can expose the basic vulnerabilities of MOST access points.
It is very simple to use and it does not require any kind of installation. Simply double click to run the application then once WiFi Auditor has gotten the password, you just need to save it so you can use it whenever you want.
DISCLAIMER:
All the advice/information that I gave was purely for educational purposes. I do not condone hacking a wireless network until and unless you are the owner of that network.
