http://www.adiumx.com/images/logo.png
Adium is a free instant messaging application for Mac OS X, released under the GNU GPL and developed by the Adium team. With Adium, you can connect to any number of messaging accounts on any combination of supported messaging services and then chat with other people using those services.
Supported services ¶

* AOL Instant Messenger (Including ICQ and .Mac)
* Jabber (Including Google Talk and LiveJournal)
* MSN Messenger
* Yahoo! Messenger (Including Yahoo! Japan)
* Bonjour (Compatible with iChat)
* MySpace IM
* Gadu-Gadu
* Novell Groupwise
* QQ
* Lotus Sametime

Notable Features ¶

* OTR Encryption
* Tabbed Messaging
* File Transfer
* Webkit Message Display

Translations ¶

Adium is currently translated into the following languages:

* Brazilian Portuguese
* Canadian English
* Australian English
* Catalan
* Czech
* Danish
* Dutch
* English
* French
* French (Canadian)
* German
* Icelandic
* Italian
* Japanese
* Norwegian
* Polish
* Russian
* Simplified Chinese
* Spanish
* Swedish
* Traditional Chinese
* Turkish


Adium
http://www.adiumx.com/





original msn messenger:
http://www.apple.com/downloads/macosx/email_chat/messengerformac.html