MessenPass is a password recovery tool that reveals the passwords of the following instant messenger applications:
Windows Messenger (In Windows XP)
Windows Live Messenger (In Windows XP/Vista/7)
Yahoo Messenger (Versions 5.x and 6.x)
ICQ Lite 4.x/5.x/2003
AOL Instant Messenger v4.6 or below, AIM 6.x, and AIM Pro.
MessenPass can only be used to recover the passwords for the current logged-on user on your local computer, and it only works if you chose the remember your password in one of the above programs. You cannot use this utility for grabbing the passwords of other users.