inSSIDer by MetaGeek wifi analyzer.

WiFi Analyzer can help you to identify Wi-Fi problems, find the best channel or the best place for your router/access-point.

NetStumbler (Network Stumbler) is a tool for Windows that facilitates detection of Wireless LANs using the 802.11b, 802.11a and 802.11g WLAN standards.

Vistumbler is open source WiFi scanner for windows.

WiFi Explorer is a wireless network scanner tool for macOS that can help users identify channel conflicts, overlapping and network configuration issues that m…

NetSpot is a software tool for wireless network assessment, scanning, and surveys, analyzing Wi-Fi coverage and performance.

Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off.

Acrylic WiFi is a free WiFi scanner designed to scan wireless networks and view WLAN channels, signal, traffic and security.

WeFi is an app which connected to free wifi and cellular networks and provided analytic services.