Fomine Observer
Fomine Observer is an alternative to the Windows Messenger Service (Windows NT/2000/XP). Unlike the Messenger Service it has a convenient interface. You can also run Fomine Observer on Windows 98/ME. Fomine Observer can be used with Fomine WinPopup to perform one-way messaging. ... For example, this type of communication can be used by network administrators who would like to keep their users informed (while the users could not communicate with each other).
http://www.fomine.com/products/observer1.exe - 1,021Kb - Download - Screenshot

Fomine WinPopup
This instant-messaging tool is a powerful replacement for Microsoft WinPopup. Fomine WinPopup is a much better user-friendly application with a handy interface. It has a contact list, which shows user status: online, offline, busy, away. Fomine WinPopup supports many useful features such as... The program has an impressive set of options, which allows you to fully adapt the program to your needs. ... Besides, you can download free add-on, which announces the incoming messages.
http://www.fomine.com/products/winpopup3.exe - 1Mb - Download - Screenshot

Fomine NetSend
Fomine NetSend is a package that contains two utility tools for sending messages via SMB protocol. This first tool NetSend. exe is a console application with a parameter set similar to NET SEND (distributed with Microsoft Windows NT/2002/XP). But unlike NET SEND, this application works with all... Fomine NetSend is fully compatible with the following messaging software: Microsoft WinPopup, Fomine WinPopup, Fomine Messenger, Microsoft Messenger Service. ... In addition, the window contains a list of computer names in the network and their descriptions.
http://www.fomine.com/products/netsend1.exe - 342Kb - Download - Screenshot

WinPopup Speak!
WinPopup Speak is free add-on for Fomine WinPopup. This application speaks incoming messages that received by Fomine WinPopup.
http://www.fomine.com/products/speak1.exe - 133Kb - Download - Screenshot

Fomine Real-Time Communications Server
We offer you a really powerful solution for real-time communication over the Intranet. Not only will you be able to send instant messages inside your office or organization, but also maintain video and voice conversations, send files and share applications. ... Fomine Real-Time Communication Server is based on the industry standard protocols. ... That is why it is completely compatible with Windows Messenger.
http://www.fomine.com/products/frtcserver1.exe - 489Kb - Download - Screenshot

Fomine LAN Chat
Fomine LAN Chat is tiny and easy-to-use instant messaging software. LAN Chat creates only one chat room, that is why it has very clear interface. The LAN Chat's interface is one window with list of chat participants, chat messages and outgoing message. ... So you can chat with users of Winpopup LAN Messenger and receive private messages from users of OfficePopup and Net Send GUI. ... Silent installation is useful for network administrators who wish to install LAN Chat without user intervention so they can perform the operation quickly over any number of computers.
http://www.fomine.com/products/lanchat10.exe - 204Kb - Download - Screenshot

Fomine Messenger
This LAN messenger allows you to exchange messages on a local network (LAN). The program does not require you to set aside a server to function properly. It is easily configurable and you will be ready to work immediately after the product's installation. ... The messenger features full support for Winpopup and netsend.
http://www.fomine.com/products/messeng1.exe - 690Kb - Download - Screenshot

Fomine Net Send GUI
Net Send GUI is plain instant LAN messenger for easy communication. It uses proprietary network protocol which one is based on TCP/IP, and it is not compatible with Microsoft NET SEND. But the Net Send GUI fully compatible with Winpopup LAN Messenger, OfficePopup and etc. ... The top one is the list of contacts and the bottom one is the message field. ... The list of contacts is formed automatically when the Net Send GUI is launched and you can refresh it any time if you press Refresh button. ... Program's window contains two parts.
http://www.fomine.com/products/netsend22.exe - 209Kb - Download - Screenshot