Free Audit tool
WAIDPS is an open source wireless Swiss knife written in Python and works on Linux environment. This is a multipurpose tools designed for audit (penetration testing) networks, detect wireless intrusion (WEP/WPA/WPS attacks) and also intrusion prevention (stopping station from associating to access point). Apart from these, it will harvest all WiFi information in the surrounding and store in databases. This will be useful when it comes to auditing a network if the access point is ‘MAC filtered’ or ‘hidden SSID’ and there isn’t any existing client at that moment.
Download the tool from here - https://github.com/SYWorks/waidps