These free Wi-Fi apps let you scan for open networks in your area. They also let you analyze your own Wi-Fi network to see what devices are connected to it and how secure your network appears to others.

All of these apps are different, but a Wi-Fi analyzer can check the network that devices are connected to, the strength of the channel, the IP address of the devices and the network itself, open ports, and more. It really is a must-have if you are monitoring your own Wi-Fi network to see how secure it is.

There are also free Wi-Fi scanners available that can help you identify networks in your area. They will tell you if they are open or closed and how strong the connection is.

Fing is our favorite free Wi-Fi app because it provides very useful information about wireless networks, but it's also not at all difficult to use.