LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...

SHAREit - SHAREit allows you to transfer files and data from your phone to another device without having to rely on WiFi or a data plan.

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.

XShare - XShare – File Fast Transfer developed and published by Shalltry Groups.

Bopup IM Suite - Organize secure messaging system and communicate instantly via self-hosted IM server.

Send Anywhere - Send whatever you want, wherever you want