inSSIDer - inSSIDer Essential makes it easy to maintain small business WiFi.
hashcat - The World's Fastest CPU/GPU powered password cracker.
NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
CrackStation - CrackStation is a web-based service that is used for retrieving passwords by cracking their hashes.
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features:
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.