JClaim is an instant message client, tools, and development framework. It supports AIM, ICQ, Yahoo!, MSN, Jabber, Google Talk, and SMS. The framework can be used for designing your own tools. The UI includes spell checking and a lot more. A Web interface is included for remote access.
A whole new UI has been added. There is a new tabbed interface (in properties, switch to Tabbed). There are many new improvements and updates.
URL: SourceForge.net: JClaim