Pidgin 2.6.1

Pidgin is a chat program which lets you log in to accounts on multiple chat networks simultaneously. This means that you can be chatting with friends on MSN, talking to a friend on Google Talk, and sitting in a Yahoo chat room all at the same time.

XChat 2.8.7f

XChat is a popular Internet Relay Chat (IRC) client. It has a choice of a tabbed document interface or tree interface, support for multiple servers and is highly configurable.