WinPopup Gold is a useful tool to send, receive messages and chat through your local network.

Easy to set up and use (no server need, no ip address to setup), it enables you to point and send messages from other active WinPopup Gold clients (if client is offline, the message will be send when he will log on). Send, receive, and manage messages using a customizable contact and media address book.

WinPopup Gold detects who is connected, in real time, and then gives you a list of valid destinations to choose from. It even lets you send files and assign attributes like sounds and photos to each contact.
Secure, it works only on your local network (no Internet use).