1)   SpyPal Yahoo! Messenger Spy 2008 5.9
SpyPal Yahoo! Messenger Spy software can secretly Secretly record all Yahoo! Messenger's incoming and outgoing chat text messages. You can check all recorded messages by simply receiving emails or opening a web page.

 2)   Inside Chat Spy 1.9
Inside Chat Spy is an easy to use application that stealthily monitors and records both sides of chat conversations that took place on a computer.