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.
MyChat - Secure instant messenger for any network
Zapya - Zaypa is a cross-platform transferring and sharing!
BORGChat - BORGChat is a LAN messaging software program.
SuperBeam - SuperBeam is a file sharing app that makes moving files across devices much easier by using technologies like NFC and QR codes instead of plug ins. It is one of the fastest was to move files from one device to another.