eero - Blanket your home in fast, reliable WiFi
NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
MIWIFI by Xiaomi - Wifi router beta with a twist: you build it yourself
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features:
Plume - App for writing documents, scripts, books and more.
Kismet - Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system.