A free utility to recover the passwords of wireless networks
....*
GitHub Repository: https://github.com/EvolSoft/WiFi-Password-Recovery
*Note: On Windows XP the passwords of WiFi networks using WPA security will be shown as 64 HEX digits. You can use these characters as password to connect to the wireless network anyway.
YAWCU is a wireless LAN (WLAN) capture + WEP cracking utility. It can crack 64/128 Bit WEP keys on IEEE 802.11b/g networks by monitoring WLAN traffic and computing the resulting WEP key once enough packets have been gathered