Broadcast Chat is intended for chatting on LAN.
It uses UDP broadcast for sending message across network.
Its not just a dumb messenger, it allows many facilities like user presence detection, Asking questions etc.
To know more about it, go to http://www.codeplex.com/XBC
Edit: Just released XBC V2.0
- Presence Detection
- Presence Notification
- Ask Yes/No Questions
- Send Message Pop UP
- Sits in SysTray, and show notifications
- AutoComplete for some common messages