is a cross-platform instant messenger that supports multiple popular IM network protocols. It can communicate with AIM, ICQ, Yahoo! Messenger, MSN Messenger and other IM systems and supports standard IM features including file transfer and chat. (Note: The Gaim package has subsequently been renamed to Pidgin
Download the Gaim messenger for free from these locations:
With Pidgin, you can connect to multiple IM networks simultaneously. The software runs on Windows, Mac, and Linux / Unix operating systems.