Express Messaging Server
Express Messaging Server 2. 0 is the perfect network communications solution for your corporate communication needs - providing you with all the network essentials of a presence and instant messaging solution. It creates fast, reliable and secure instant messaging connections between network... As a private instant messenger client and server solution, Express Messaging Server 2. ... 0 is a secure way to set up a private communications system on your LAN or WAN. ... Express Messaging Server includes a Windows NT account converter to create an Express account database in seconds.
http://offsitedl.acdsystems.com/english/express/expmes.exe - 1Mb - Download - Screenshot

MessagePal
MessagePal provides simple, secure, instant messaging between users on your LAN. Only two minutes to download and install, MessagePal is a peer-to-peer system requiring no central server or administration. This cost-effective LAN messaging system provides unique workgroup features not found in... messagepal. ... http://www. ... Easy to use and administer. ... Group lists, 1-click Replies, Message Forwarding, and many more unique features!!!
http://dl.filekicker.com/send/file/169065-I6DF/MPInstall.exe - 3Mb - Download - Screenshot

iGo Incognito
iGo Incognito - the most secure instant messaging system available. iGo Incognito provides encrypted instant messaging, private chats and open forums. The iGo Incognito network is built on a combination of public key encryption and the US Advanced Encryption Standard (AES). ... As is common with all Instant Message systems, you can see in real time whether friends are online or not, you can send messages and files, and you can engage in chats and open discussion forums. ... And your friend doesn't need to be online to receive the message - iGo Incognito supports offline messaging.
http://www.igo-incognito.com/download/IGo-Incognito1.2.exe - 2Mb - Download - Screenshot

LanToucher Instant Messenger
LanToucher Instant Messenger is instant messaging software for your office or home LAN (Local Area Network) Being an efficient WinPopup and 'net send' command alternative, our full-featured instant messaging application offers you a much richer network communication environment, expanding the... Its user-friendly interface and original features make LanToucher Instant Messenger the tool of choice for both home and enterprise instant messaging. ... KEY FEATURES: True serverless (peer-to-peer) messaging; Proven cross-platform compatibility; All 32-bit Windows versions support; Works over any...
http://www.vitalsoundlab.com/files/ltsetup.exe - 2Mb - Download - Screenshot

PopMessenger
As the world starts moving faster, we all want to catch up with the latest technologies. Indeed, investing in faster, more reliable and less human-dependent technologies, is a great opportunity to win the race and beat the competition. One of the key factors of successful business operation is... PopMessenger operates as a LAN-based instant messaging system allowing for immediate rich text message and files delivery over corporate network. ... Internet-based instant messaging solutions are good but they rely on third-party services which makes the entire system unreliable in question.
http://www.leadmind.com/pmesseng.exe - 2Mb - Download - Screenshot

FlashDeli
FlashDeli (Flash Delivery) is an instant messaging system for your LAN or intranet. FlashDeli gives you an ability to easily exchange messages with your colleagues and neighbors. Using this feature-rich yet simple program you will never miss the important messages. ... FlashDeli is intended for instant message transmission between users of a local area network. ... The program is launched at computer startup and stays in the system tray. ... You may activate the program either by double clicking its icon in the tray or by pressing the preset key combinations (Hotkey).
http://FlashDeli.com/download/FlashDeliSetup.zip - 327Kb - Download - Screenshot

1 - Instant OfficeView
Instant OfficeView is a virtual in-out board that does not need a central server to operate. It is easy to install and requires no administration. It has an optional presence detector which indicates who are actively at their workstations. The program also displays which workstations are not... Information and messages are exchanged instantly and the messaging system has an option to have the messages pop up on top of all other running programs. ... When you turn on your computer, the board automatically shows you as "In" and when you shut down your computer, it automatically changes your...
http://www.officeview.com/IOV.zip - 301Kb - Download - Screenshot

Ken Messenger Server
Ken Messenger Server the Instant Messenger Server working with our IM Ken Messenger. Ken Messenger is a professional Instant Messaging software system based on the client/server principle. It allows companies, organisations, institutions and dispersed workgroups to create and control their own... Ken Messenger Client can also be used free of charge as an Internet Messenger, and as a viable alternative to the existing messengers, using more developped features. ... Its tremendously powerful features yet fully compatible with Ken Messenger included in Kennet Net.
http://www.wilcom2.com/Download/KenMessengerServer.exe - 10Mb - Download - Screenshot

Zim
ZIM is slim and simple chat and instant messaging server for Windows 2003/XP/2000. Easy to install and use, ideal for use in LAN or remote VPN protected environments. ZIM supports public and private chat channels, offline messages and file transfers through the server. ... Key features: - Instant messaging including offline messages. ... - Optional self register procedure for creating user accounts without system administrator. ... - File transfers through the server for users from remote locations behind firewalls, routers and VPNs.
http://www.zilab.com/zim20.zip - 1Mb - Download - Screenshot

SnapMail
SnapMail is the cross-platform private messaging and file transfer utility for your office. Instantly send messages, files, reminders, and alerts on your network. Unlike instant messaging, SnapMail uses peer-to-peer technology and does not rely on Internet servers to send mail within your local... This makes SnapMail a very fast in-house messaging system that complements your Internet email. ... SnapMail configures itself and finds other users on the network without system administration. ... All of your messaging can be conducted without fear of accidentally sending mail out of your company.
http://www.glassbead.com/download/files/SM4_WinInstaller.exe - 10Mb - Download - Screenshot