Kismet is described as '802.11 layer2 wireless network detector, sniffer, and intrusion detection system. Kismet will work with any wireless card which supports raw monitoring (rfmon) mode, and (with appropriate hardware) can sniff 802.11b, 802.11a, 802.11g, and 802.11n traffic' and is an app in the network & admin category. There are more than 25 alternatives to Kismet for a variety of platforms, including Windows, Linux, Android, Mac and Android Tablet apps. The best Kismet alternative is inSSIDer. It's not free, so if you're looking for a free alternative, you could try Wi-Fi Info or Homedale. Other great apps like Kismet are NetStumbler, Vistumbler, NetSpot and WiFi Analyzer - VREM.