Jabber
Openfire (Jabber/XMPP server) by default binds on port 8080 which is also used by Tomcat.
I am sick and tired of Yahoo Messenger Spam initiated primarily by Myfreecamhost and now joined by few new initiates too.
Yahoo Instant Messenger isn't directly available on Linux.
Openfire is a cross-platform java based free Instant Messaging server which implements the XAMPP (Jabber) protocol with extensions.
eBox platform provides a mini-debian installation along with its modules to allow you to provide and manage network services on your corporate network.