It works with any wireless card which supports raw monitoring (rfmon) mode, but there are limitations when used in Windows. Kismet is a wireless network sniffer, analyzer, stumbler and intrusion detection system that can run on multiple platforms, including Linux, Mac OS X, and Windows. It also features some powerful filtering functions, decryption support for many protocols, and offers VoIP analysis. It supports reading/writing from/to many different capture file formats and supports exporting to a few different formats. It can capture and/or show the data packets for Ethernet, Wi-Fi, Bluetooth, and other hundreds of other network protocols, depending upon the platform and network adapter you’re using. Wireshark (Formally Ethereal) is a popular network protocol analyzer. Here you’ll discover free network sniffers, analyzers, and stumblers for Windows, Mac, Linux, and even Android. You can use them during site surveys, installs, troubleshooting, and even auditing.

There are many commercial network tools out there offering all the bells and whistles, but sometimes a simpler product will do the job.

Free wifi sniffer windows 10