LAN Messenger is a decentralized UDP IM-style chat client which supports usernames, guaranteed-delivery IMs, broadcast chat, encryption, file transfer, simple UI, persistent settings, and IP blocking.
constantly loses messages, we gave up
user list is not stable randomly losing half of all persons from time to time
Oh how we did tire of all these free messengers, fought this one for other 2 months and gave up (buggy, crashes, loses users and its messages.... oh hell), I sent the report application to boss to gain a budget to get a good software instead. Very sad