Ah Goeie: 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.
AlarmTILT: Unified incident handling solution alerting via SMS, e-mail, voice alerts, and pagers.
Cross-Platform Instant Messenger for LAN: MacPopUp is a program that allows Macintosh/Windows users to exchange instant messages with other users on any local area network (LAN).
Data Mate Communications: Provides hardware and software call-announcing solutions with the Data Mate System and DataTel Call-Announcing software.
Digital Resources, Inc.: The DRI Multi-protocol Message System (MMS) is a general purpose store-and-forward message switching system that maximizes the advantages of modern network techniques.
Invisend: Graphical front-end for the "net send" command, used to send short messages in Windows NT based LAN. Features group messaging, and nick names.
It's4U!: Provides quick and simple internal office communication. Integrated instant mail, chat, message broadcast, and an in-out board that shows if someone is using their PC.
Leong Software Pty Ltd, Australia: 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.
Linpopup: A Linux Enhanced port of Winpopup.
Mac Instant messaging software for LAN: MacPopUp is a program that allows Mac users to exchange instant messages with other users on any local area network (LAN).
Messageware Incorporated: E-mail consultants, developers, and e-mail software suppliers. Gateways, connectors and directory synchronization for corporate LAN email systems.
VyPRESS Research: Instant messaging and real-time chatting software for LANs (instead standard WinPopup), corporate WANs and intranets. Powerful and easy to use messaging services.
Wireless Messaging Software for Networks: Messenger Net is wireless messaging software of LAN,WAN and Enterprise network users.