10 Instant Messaging Clients for Linux
aMSN is a powerful, highly configurable and feature-rich client for the WLM (formerly known as MSN) protocol with support for skins, plugins, system tray integration, webcam, tabbed chat windows, multi-accounts, offline messaging, chat history, display picture and many, many more. The configuration options are abundant via the Account->Preferences menu.
This is the well-known IM client for the GNOME desktop environment with support for a wide variety of IM protocols, including AIM, Google Talk, ICQ, MSN or Yahoo. Piding also comes with a basic IRC client, support for multiple accounts, logging, system tray integration, themes, plugins.