Acrylic Wifi

Acrylic WiFi is a free WiFi scanner that displays WiFi access points and connected devices, shows information of the security mechanisms and obtains generic WiFi passwords thanks to a plugins system. The utility is able to gather information from 802.11/a/b/g/n/ac networks.

https://www.acrylicwifi.com/en/wlan-software/wlan-scanner-acrylic-wifi-free/