Pidgin is a free universal chat application. The project was started in 1999 and is licensed under GNU general public license. There are over three million Pidgin users worldwide. With Pidgin instant messenger you can chat on Aim, Google Talk, MSN, ICQ, Gadu Gadu, Yahoo, MyspaceIM and many others. You can connect to multiple chat networks and have all your friends in one place. There are several features such as file transfer, emoticons, away messages etc. If you would like to have additional functionality then check out the many plugins that are available for this application. Pidgin instant messenger is also available in many different languages and works well on Linux.