LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
BORGChat - BORGChat is a LAN messaging software program.
Send Anywhere - Send whatever you want, wherever you want
RealPopup.it - A network messaging application that's feature-rich yet easy-to-use and won't cost you a fortune, RealPopup LAN chat offers fast, stable messaging across your local network. No application server required, just install on your PC and start messaging!
ShareDrop - HTML5 clone of Apple's AirDrop - easy P2P file transfer powered by WebRTC
Output Messenger - Secure instant messenger app for office provides seamless instant messaging solutions for all office, corporate and enterprise business communication needs.