Nmap is a free network scanning software available for Windows, Linux, macOS, etc. This open-source freeware can be used to check ping status, scan the entire network, check the uptime of any host, ...
NetSpot is easily the best WiFi analyzer software for both Windows and Mac. It’s an industry standard that’s free to use. Alternatively, one can also look at inSSIDer, AirRadar 5, WiFi Explorer, and ...