Computer:
- inSSIDer Office
- NetSurveyor
- Xirrus Wi-Fi Inspector
- Acrylic Wi-Fi Home
- WirelessMon
- Ekahau HeatMapper
- Vistumbler
- Wi-Fi Scanner
- Kismet
- iStumbler
- AirRadar 4
- Wellenreiter
- NetStumbler
- AirCheck G2 Wireless Tester
The most popular is inSSIDer Office.
Mobile:
- WifiExplorer
- WiFi Manager
- OpenSignalMaps
- Network Signal Info Pro
- WiFiFoFum – WiFi Scanner
- WiFinder
The most popular is WifiExplorer.
List of Wi-Fi Discovery Tools for computer
inSSIDer Office
https://www.metageek.com/
NetSurveyor
Xirrus Wi-Fi Inspector
https://www.xirrus.com
Acrylic Wi-Fi Home
(https://www.acrylicwifi.com
WirelessMon
https://www.passmark.com
Ekahau HeatMapper
Vistumbler
https://www.vistumbler.net
Wi-Fi Scanner
https://lizardsystems.com
Kismet
https://www.kismetwireless.net
iStumbler
https://www.istumbler.net
AirRadar 4
https://www.koingosw.com
Wellenreiter
http://wellenreiter.sourceforge.net
NetStumbler
http://www.stumbler.net
AirCheck G2 Wireless Tester
http://enterprise.netscout.com
List of Wi-Fi Discovery Tools for mobile
WifiExplorer
http://nutsaboutnets.com
WiFi Manager
https://kmansoft.com
OpenSignalMaps
https://opensignal.com
Network Signal Info Pro
http://www.kaibits-software.com
WiFiFoFum – WiFi Scanner
https://play.google.com
WiFinder
https://play.google.com