You can message and share files inside your intranet without a server.
UFONet - Denial of Service Toolkit
Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
rabbit instant messaging
Program for filesharing using Direct Connect and ADC protocols
A modern, AI-Smart, WASTE p2p for ipv4 and invisible address spaces
A small, reliable, local network messenger that doesn't need internet
Secure Anonymous P2P Chat
Fully decentralised secure p2p communication program
1 on 1 Webcam Videochat Script with P2P Support
Video live support solution for unlimited departments and moderators.
p2p (sockets) chat with inKey encryption (32768 bit).
An intranet chat application that does not require a server.
A P2P Messenger which uses JXTA. It provides secure RSA/AES end-to-end
Chat inside a LAN (subnet).