Skype Lite App Call and IM friends from your mobile phone.
Here are some key features of "Skype Lite (Nokia)":
PKSArena BluChat Bluetooth based chat application. Using this application, users can send unlimited messages between themselves (over bluetooth) without incurring any data transfer or sms charges
Cliente Chat for Java Both English and Spanish version of Pablo Gallego's J2ME chat client, you can join existing chat channels or create your own
MobJab Mobile Messenger MIDP 1.0 MobJab your very own Instant Messaging and Presence (IMPS)client for FREE. No need to send expensive SMSes to your freinds. With MobJab you can also chat with your freinds/buddys