Instan-t 4.6 (by Interactive Networks Inc.)
Instan-t IM messenger communicates with MSN, AOL, Yahoo!, ICQ and Instan-t

Instan-t 4.6 (by Interactive Networks Inc.)
Instan-t IM messenger communicates with MSN, AOL, Yahoo!, ICQ and Instan-t

Outlook LAN Messenger 4.1.0 (by SriMax Software Technology)
Instant LAN Messenger for Text, Group & Voice Chat, File transfer within Office

Network Chat 1.41 (by Global DevTech)
Chat in privacy on your network.

Vigorous Enterprise Messenger 5.03 (by IMEASE)
Private and secure Enterprise Instant Messenger,run on LAN as well as Internet.

Secure Network Chat 2.6.43 (by SecureAction Research, Ltd)
Text chat able to solve all the problems in communication

CommFort 2.20 (by commfort.com)
A client-server chat with voice chat support for messaging over LAN.

Fomine Observer 1.0 (by FOMINE SOFTWARE)
Winpopup compatible messenger for receiving messages only.

Secure Network Messenger 1.5.5 (by SecureAction Research, LLC)
Secure real time communication software without using dedicated servers

Utility Phone 1.5 (by UtilityPhone.com)
FREE Worldwide secure communications for voice, video, text and file transfer.

x Chat Free 2.9 (by xStudio.ca)
x Chat Free is a private one-to-one real-time chat program for Intranet.

MessagePal 1.6.3 (by Grenox Software, Inc.)
Secure, Simple, Instant Messaging For Office LAN. 1-Click Replies & Much More!!

Invisible Chat 1.22 (by Mentis Software)
Invisible Chat is software for invisible communication by local network.

Huminity 2.0 (by Huminity Ltd.)
The first social ecosystem on the web - Social Networking,Blogs,Groups and Chat!

ICQPromoter 1.1 (by Nanosoft Inc)
ICQPromoter is a powerful Marketing and Promotional tool for sending messages.

IMGiant Instant Messenger 3.0 (by Imgiant)
IMGiant is a new instant messaging client that combines all IM's into one!