AirStatz

AirStatz is the best Software for Mac . Visually evaluate the quality of your WiFi signal

Mac Wifi Signal
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Version 1.2.1u

Acrylic WiFi Free x86

Acrylic WiFi Free x86 is the best Software for Windows . Monitorize Wi-Fi signal levels and identify WLAN networks and connected clients

Windows Wifi Signal Wlan A NET
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Version 1.1