This are third Party of Yahoo Messenger.
People use it to prevent from yahoo booting.
here are the link to there site.
YAZAK
http://www.yazakpro.com
YAHELITE
http://www.yahelite.org/deep/yahelite/
NO5
http://no5.helpbytes.co.uk/
Yahaven
http://yahaven.net/chat/
CHEETACHAT
http://www.cheetachat.com/
