Wifi Unlocker 2.0 is an application that will help you audit the security of your WiFi networks or recover passwords from other networks. Of course, in theory you should only use it for your own networks, but in practice you may find other uses.

Using the application is as simple as hitting the refresh button situated in the upper right-hand corner of the screen, and waiting for it to find all the available networks in your area. This can take quite awhile, depending on how many networks are close by.

Once you have the list, you can select your network (it's important not to select unfamiliar networks, as you could end up committing a crime) and check out its security. If you can see your password, it's probably a good idea to switch it up.

This version of the application supports the following modem models: Thomson, Blink, SpeedTouch, O2Wireless, Orange, INFINITUM, BigPond, Otenet, Bbox, DMAX, privat, DLink, Discus, eircom, FASTWEB-1, Alice, WLAN_, WLAN, JAZZTEL, YaCom, SKY, TECOM-AH4222, TECOM-AH4021, InfostradaWiFi, TN_private_, CYTA, InterCable, Axtel, and MegaRed.