Kryptonite

KMess is an MSN/Live Messenger compatible chat client for Linux. The strength of KMess is it's integration with the KDE desktop environment, focus on Live Messenger specific features and an easy-to-use interface.

Kraken is a continuation of the Openfire IM Gateway plugin, but in a way that works for any XMPP server. It provides a way for XMPP users to log into, and communicate through, their legacy IM accounts such as AIM, ICQ, MSN, Yahoo, and friends.

ksocket provides a set of BSD-style sockt APIs to linux kernel space developers.

aAmarok is a plugin that allow a user to use the "Now Listening to" function in aMSN with Amarok. As you know, there is already a music plugin for aMSN, but this one is a lot less bloated as it only supports Amarok.