Qiks is a LAN messnger to chat and transfer file esily.
This Program Contains Many Useful Network Tools
A small (ish) messaging server for anything you can think of
Just another LAN messenger
Simple and lightweight IM client
a java based LAN messenger
Mossawir Lan Messenge 3, Sever less Peer 2 Peer Lan messenger
Small messenger solution for teams inside a LAN using eclipse
An instant messaging client for XMPP networks