Wireless Security
Wireless Security is the set of tools used to monitor, audit, and test Wi-Fi, Bluetooth, and other radio networks. It covers packet capture from the air, wireless intrusion detection, and authorized checks of access points, clients, and encryption settings. Tools here are meant for networks you own or have written permission to assess.

Bettercap
Bettercap is a free open-source network attack framework used to run recon and MITM tests on Wi-Fi, BLE, and IP networks for authorized security testers.

Kismet
Kismet is a free open-source wireless sniffer and WIDS used to detect Wi-Fi, Bluetooth, and RF devices for network defenders and authorized testers.
Wireless SecurityFreeOpen sourceAircrack-ng
Aircrack-ng is a free open-source Wi-Fi security suite used to capture traffic and test WEP and WPA keys for authorized testers auditing wireless networks.
Wireless SecurityFreeOpen source