KoolIM is an IM service that compares to eBuddy and Meebo. As Meebo is superior to eBuddy, Kool IM is a real competitor as it offers the same IM platforms as Meebo does. Advantage of both Meebo and Kool IM is login functionality : You can create an account on their site that remembers all logins to your IM sessions. Easy !

KoolIM Screenshots: