hashcat - The World's Fastest CPU/GPU powered password cracker.

TamoGraph Site Survey - Wi-Fi site coverage survey and modelling application

CrackStation - CrackStation is a web-based service that is used for retrieving passwords by cracking their hashes.

Waircut - Free network audit app

Password Cracker - Password Cracker is a software for Windows that is used for recovering forgotten passwords for different software and websites that you use from the browser.

Homedale - With Homedale you can search for Wi-Fi / WLAN Access Points and monitor their signal strength.