Akeni LAN Messenger is an instant messenger for LAN
The LAN Edition does not require connection to the internet. Also with its intuitive user interface, those familiar with public IM clients such as MSN Messenger or AOL AIM, will be using Akeni like a pro in no time.

Basic features include real-time private chat sessions, group conferences, presence management, file transfers and emergency alerts/notifications.
Currently available for: Linux, Windows 95, 98, Me, NT, 2000 and XP.