Free WiFi Scanner and channel scanner for Windows (WLAN Scanner)

Vistumbler - Open Source WiFi scanner and channel scanner for windows

Wifi Analyzer and Scanner - Microsoft Apps

NetSurveyor 802.11 Network Discovery Tool

Wi-Fi Scanner - Simple and convenient tool for monitoring 802.11a/b/g/n/ac/ax wireless networks. - LizardSystems

Wi-Fi Scanner 4.0 Download (Free trial) - WiFi Scanner.exe

v22.xx] Wi-Fi Scanner – Scan and analyze 802.11a/b/g/n/ac/ax wireless networks

wireless - Is there a program to see channels used by Wi-Fi networks (similar to Vistumbler or inSSIDer) in Ubuntu? - Ask Ubuntu

NetSurveyor 802.11 Network Discovery Tool

Wifi Analyzer - Apps on Google Play