MacPopUp is a program that allows Macintosh/Windows users to exchange instant messages with other users on any local area network (LAN). http://www.softwarium.com/
E-mail consultants, developers, and e-mail software suppliers. Gateways, connectors and directory synchronization for corporate LAN email systems. http://www.messageware.com
Instant messaging and real-time chatting software for LANs (instead standard WinPopup), corporate WANs and intranets. Powerful and easy to use messaging services. http://www.winpopup.com
ePoster is a utility that turns every computer in the company into a revolving notice board. By using the Windows screen saver function, display web pages to your staff without interfering with their normal work. http://leong.com.au/ePoster/
Graphical front-end for the "net send" command, used to send short messages in Windows NT based LAN. Features group messaging, and nick names. http://www.geocities.com/arun_ta/index.html
A front-end graphical interface to the Net Send command in Windows NT. Use it to send messages to a group of users or a single station. It's simple, easy to use, and free. http://www.digital-kingdoms.net/ah-goeie/