LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
Ripcord - A desktop chat client for Discord and Slack
MyChat - Secure instant messenger for any network
Slack - A messaging app for teams who see through the Earth!
BORGChat - BORGChat is a LAN messaging software program.
Ziggs - Smoothly Share Content Between Devices!