Pidgin is an instant messaging program for Windows, Linux, BSD and other Unix systems. You can talk to your friends using AIM, ICQ, Jabber / XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. Pidgin can access multiple accounts on multiple IM networks simultaneously. This means that you can be chatting with friends on AIM, talking to a friend on Yahoo Messenger, and sitting in an IRC channel all at the same time.
Pidgin supports many features of the various networks, such as file transfer, away messages, and typing notification. It also goes beyond that and provides many unique features. A few popular features are Buddy Pounces, which provides the ability to notify you, send a message, play a sound, or run a program when a friend goes away, signs online, or the return of inactivity, and plugins, consisting of replacement Text, A friend heart, extended message notification, iconify on away, spell checking, tabbed conversations, and more.
Pidgin runs on a variety of platforms, including Windows, Linux, UNIX and other operating systems. Pidgin looking for OS X? Try Adium!
Pidgin integrates well with GNOME 2 and KDE 3.1 's system tray, as well as Windows' own system tray. This allows you to work with Pidgin without requiring the buddy list window to be open at all times.
Pidgin is in constant development, and releases are usually frequent. The latest news regarding Pidgin can be found on page news. Download Pidgin.
Source : http://dhuwuh.blogspot.com/2008/10/pidgin-saver-of-quota-for-instant.html