Pidgin for Everyone
Pidgin is a chat program that lets you use 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. So no matter what platform you are on, you can use Pidgin as your chat client. Install Pidgin using the right installer from their website. You will see the welcome screen when the installation finishes where you can add your first chat network by clicking the ‘Add’ button.
Source:
http://www.howtogeek.com/howto/38942/the-beginners-guide-to-pidgin-the-universal-messaging-client/