http://sourceforge.net/projects/pidg...dgin-2.6.6.exe

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.

Pidgin runs on Windows, Linux, and other UNIX operating systems. Looking for Pidgin for OS X? Try Adium!