Popular text chat solution that was designed specifically for small and middle local area networks. It doesn't require an Internet connection or a dedicated server, because it utilizes your network, enabling your staff to prioritize and communicate effectively. This program makes it easy to simultaneously exchange files, clipboard data, and text messages. Best of all, your users will have equal access to all of the tools and functions. This program's so easy to use and customize that your whole staff will be exchanging text messages with groups and individuals in no time. To organize on-going group communication you can dedicate certain channels to be used for certain subjects. You can even restrict users from entering chat sessions and add channel password-protection to make discussions more secure. Your employees can send private messages to other users via the instant messenger and receive message delivery confirmation. There are tons of additional options that allow you to add message filters, receive online and audio alerts, and more.
Secure Network Chat 2.10.15
Secure text chat
Akeni LAN messenger is a business IM
TCP/IP Winsock Toolkit for Windows Developers
Network socket communication Toolkit