Jabber client under the GNU license.

Official AOL chat client for the AIM protocol.

Apple's text and video messaging program for Mac OSX.

Official ICQ client for Mac OS 9 and X.

An open source instant messaging system fully based on XML.

Official MSN chatting client.

Jabber client for Mac OS 10.3 or later.

Unique visual instant messaging client. User assumes an avatar and moves around palace "rooms" interacting with other users.

Commercial license client supporting the six major protocols.

Jabber client with SSL support.

Allows users to exchange instant messages with other users on a LAN and across multiple operating systems.

Jabber protocol client supporting Mac OS 9 and X.

Official client. Available for Mac OS 9 and X.