LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
BuddyTalk Instant Messenger - BuddyTalk is a java based instant messanger, you can login with your gmail username and password to...
MyChat - Secure instant messenger for any network
KouChat - KouChat is a simple serverless chat client for local area networks (wifi).
BORGChat - BORGChat is a LAN messaging software program.
Softros LAN messenger - LAN messenger for an internal office chat for home or business users. It does not require a server and is very easy to install and use. It supports personal chats, group chats, message brodcasting, files transfer and remote desktop access.