Overview
- IP Messenger is a pop up style LAN message communication software
for multi platforms. It is based on TCP and UDP/IP.
- This software does not require server machine.
- Folder/file transfer (ver2.00 or later)
- RSA/Blofish Encryption of communication data (ver2.00 or later)
- Simple, lightweight, and free software 
- IPMsg software is available for Win16, MacOS, MacOSX, X11, GTK,
GNOME, Java and all sources supplied with protocol.
Operating system : MS Windows 98/2000/XP/2003/Vista
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Thanks for sharing this, it worth to give a try with BigAnt office messenger since it offers 10 users free license, and it supports transfer both of files and folder during the chat.