If you are looking to test network security rather than just recover a password, consider these professional-grade tools:
Security firms consistently report that over 95% of "hacking tools" found on free download sites contain actual malware. The remaining 5% either don't work or are intentionally designed to look like they're working while compromising your system.
Many businesses, libraries, and municipal areas offer free, legal public WiFi.
Capturing the wireless data flying through the air using specialized Wi-Fi cards that support "monitor mode."