inSSIDer Channels
inSSIDer is a WiFi analysis program that visually displays all of the wireless networks in your area including channel and signal strength. It’s a geek’s dream-come-true software that graphically shows which channels each wireless router is utilizing and that allows you to quickly solve any interference issues. You can also leave it running and check the signal strength history tab to see if and how long your network(s) went down.
It also has the ability to interface with your GPS (onboard or via USB) to map WiFi networks and their signal strengths. Unfortunately I don’t have a GPS to test this feature, but if it’s anything like the rest of the program it is probably pretty awesome.
inSSIDer Signal Strength Graph
Memory usage is a mere 30 Mb so there are zero performance issues. Go ahead and try it out: inSSIDer
In case any of you are wondering about the name of this program, SSID stands for Service Set Identifier. If you still don’t get it, just call it lame geek humor.