eBuddy for Java - eBuddy is a cross-platform application that allows you to chat with your friends no matter what instant messaging service they use. With the app installed on your mobile phone you can communicate with all your contacts on MSN, Facebook, Yahoo!, MySpace, Gtalk, ICQ, AIM and Hyves.
eBuddy shows your buddies in a unified contact list and lets you know who is online and what IM service they are using. The app runs continuously in the background, so you will always be available for your friends. eBuddy also allows you to choose your avatar and spice up conversations with emoticons.
Fun sms for s60v5 Install this SMS chat software and exchange sound effects, 3D smileys, animated GIFs, built-in sounds, web pages, text documents...with your friends who also have installed FunSMS
Nimbuzz (Java) Nimbuzz is free calls and messaging! Everything you need to communicate for free. Also share photos, music, videos, and location. Even import Facebook, Yahoo, MSN, ICQ, Google Talk, AIM & more
youjat Chat with your friends on your mobile phone
Miz chat Allows you to chat with users from all over the world both in public and private. It has multiple chatrooms that enable regional, personal or general discussions