A lightweight XMPP client based on the Smack framework.

Yaaic (Yet Another Android IRC Client) is an Internet Relay Chat (IRC) client for Android devices.

Yahoo! Messenger for android. Data sent through network(No SMS fee). Support bubbles, smileys, colorful text, theme and send winks among Hi Yahoo users.

Windows Live Messenger client for android. Data sent through network(No SMS fee). Support chat bubbles, smileys, colorful text and send winks among Hi MSN users.

AIM client for android