iStumbler

By combining MetaGeek spectrum and packet analysis tools into a single bundle, MetaGeek Complete gears you up to resolve complex Wi-Fi problems. MetaGeek Complete includes Wi-Spy DBx, a powerful dual-band analyzer that measures Wi-Fi and non-Wi-Fi activity in both the 2.4 GHz and 5 GHz bands. Chanalyzer utilizes radio frequency activity data from Wi-Spy DBx to provide you with a real-time visual overview of your Wi-Fi network environment. Using the dual-band spectrum analysis capabilities of the Wi-Spy DBx, view channel utilization across the entire 2.4 and 5 GHz bands to find out which channels are low on capacity. Whether activity in the spectrum is caused by Wi-Fi or not, Chanalyzer and Wi-Spy help you see how busy each channel is.

Kismet works with Wi-Fi interfaces, Bluetooth interfaces, some SDR (software defined radio) hardware like the RTLSDR, and other specialized capture hardware. Kismet works on Linux, OSX, and, to a degree, Windows 10 under the WSL framework. On Linux it works with most Wi-Fi cards, Bluetooth interfaces, and other hardware devices. On OSX it works with the built-in Wi-Fi interfaces, and on Windows 10 it will work with remote captures. There are several ways you can help support Kismet development financially if you’d like to; support is always appreciated but never required. Kismet is, and always will be, open source. With the new Kismet codebase (Kismet-2018-Beta1 and newer), Kismet supports plugins which extend the WebUI functionality via Javascript and browser-side enhancements, as well as the more traditional Kismet plugin architecture of C++ plugins which can extend the server functionality at a low level.