1)   Outlook LAN Messenger 5.0.0
Instant messaging software designed for use within Small and Corporate Office's Local Area Network. Features include Text & Group Chat, Voice Chat, File Transfer, Offline Messaging. Its Server-less, requires No internet connection & Easy to install.

 2)   Softros LAN Messenger 4.5.5
Softros LAN Messenger is a instant LAN messaging software for home or office users. It does not require a server and is very easy to install and use. Works on the TCP/IP based networks and supports Windows/Citrix terminal services.

 3)   LanToucher Instant Messenger 1.4
LanToucher Messenger is an easy-to-use and cost-effective communication solution for your internal corporate or home network. All you will need to begin sending instant messages is a wired or wireless connection to your local network!

 4)   Bopup Messenger 6.0.1
Fast and fully managed instant messenger for secure use in business and corporate environments. It offers encryption of private and group collaborations, supports file transfer and offline messaging, provides Active Directory and branding support.

 5)   OnLAN Messenger 4.0.2
OnLAN Messenger - Enterprise product - messaging service is a client-server multi-user application for instant messaging and file exchange (instant messenger).

 6)   Flashdeli 3.94
Flashdeli (Flash Delivery) is an instant messaging system for your LAN or intranet. This software is a replacement for Microsoft WinPopup or Messenger services. It will give you a solid boost in office productivity.

 7)   BigAnt Messenger 2.43
BigAnt Messenger is a secure corporate instant messaging program, with instant messaging, file sharing, voip, video chat, offline messaging, web conferencing, and group broadcast.