Emesene is a free MSN portable client or MSN Messenger Clone, that can be stored and run directly from a USB device. It offers many of the same features as MSN Messenger. Specifically, emesene offers a tabbed chat, custom emoticons, file transfers, offline messaging, personal messages, nudges, chat logging, plugins and a multilingual GUI.
Emense - MSN Portable Messenger
Authors Website: http://www.emesene.org/
License: Open Source
Download: You can get this Portable MSN Messenger clone HERE