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.
Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It can support many more with plugins.
Pidgin supports many features of these chat networks, such as file transfers, away messages, buddy icons, custom smilies, and typing notifications. Numerous plugins also extend Pidgin's functionality above and beyond the standard features.
Pidgin integrates with the system tray on Windows.
version 2.1.1 (08/20/2007):
* Added an account action to open your inbox in the yahoo prpl.
* Added support for Unicode status messages in Yahoo.
* Server-stored aliases for Yahoo. (John Moody)
* Fixed support for Yahoo! doodling.
* Limited support for MSN Messenger contacts
* Bonjour plugin uses native Avahi instead of Howl
* Bonjour plugin supports Buddy Icons
* Only report conversation close when 'send typing notifications'
preference is turned on (Bob Rossi)
* Show current outgoing conversation formatting on the font label on
* Slim new redesign of conversation tabs to maximize number of
conversations that can fit in a window
* Tab bar is not visible when only one conversation is open. You can
drag and drop conversations from the infopane.
* Moved "Reset Formatting" toolbar button to Font menu.
* Double click on the infopane to alias buddies and set topics
* New smiley style
* Sound support (Eric Polino)