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

WebGate
Do you use pagers, mobile phones, or other wireless messaging devices at work? Do you want an easy way to let everyone in your company send messages to these devices from a web browser or via email? If so, WebGate by NotePage, Inc. is probably the perfect solution for you. ... WebGate can act as a messaging gateway between your wireless messaging devices (pagers, mobile phones, etc. ... WebGate's email interface is capable of using several different methods to relay messages to you wireless messaging devices.
http://www.notepager.com/download/wgv3.exe - 4Mb - Download - Screenshot

SMS Server
SMS Gateway is a powerful, flexible application, that enables you to send/receive SMS messages to mobile devices with your computer. It has an easy to use user interface, and an excellent internal architecture. The application can use a GSM mobile phone attached to the PC with a phone-to-PC... ) Software developers: Software developers can integrate SMS messaging functionality into their applications very easily. ... You can read more about this new technology, that provides high performance and reliablity in the world of mobile and fixed line messaging in our on-line documentation.
http://www.ozeki.hu/index.php?owpn=504 - 0b - Download - Screenshot

IM2001Server
IM2001Server is a freeware instant messaging software for Windows that works in your LAN on Internet. This software is under developing from a community of developers so it's totally freeware (at least the beta version). This software contains two parts: the server and client; both are for... since there are security problems; with this software you can set up an internal instant messaging service within your company and use new incoming comunication channel is growing daily!. ... Any message has a return receipt, so under stress conditions the messages will be sent and delivered even if...
http://www.info2001.it/download/im2001server.msi - 3Mb - Download - Screenshot

IM2001
IM2001 is a freeware instant messaging software for Windows that works in your LAN on Internet. This software is under developing from a community of developers so it's totally freeware (at least the beta version). This software contains two parts: the server and client; both are for Windows and... since there are security problems; with this software you can set up an internal instant messaging service within your company and use new incoming comunication channel is growing daily!. ... Any message has a return receipt, so under stress conditions the messages will be sent and delivered...
http://www.info2001.it/download/im2001.msi - 5Mb - Download - Screenshot

Chilkat XML Messaging
Makes adding peer-to-peer XML messaging to your distributed applications easy. Integrates with Chilkat SSL, Chilkat Real-Time Compression, and Chilkat Crypt for automatic compression and security. Send and receive XML messages. Integrates with Chilkat SSL for secure messaging over SSLv3 or TLSv1. ... The CkData component is handy for loading/saving data to files, accessing as binary, strings (with or without line-endings translated), Base64, Quoted-Printable, compressed, encrypted, etc. ... Send and receive raw binary data at the socket level if desired.
http://www.chilkatsoft.com/ChilkatXmlM.exe - 977Kb - 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... All of your messaging can be conducted without fear of accidentally sending mail out of your company. ... This makes SnapMail a very fast in-house messaging system that complements your Internet email.
http://www.glassbead.com/download/files/SM4_WinInstaller.exe - 10Mb - Download - Screenshot

NotePager Net
A full feature network paging software that allows for all users on a network to share a commmon modem, phone line and database to facilitate the sending of text messages to pagers, cellular phones or other messaging devices. Features allow for group paging, on-call messaging, scheduled paging,... The ease of use, for network users makes it a perfect solution for taking control of corporate communication. ... NotePager Net is designed for business use and can be scaled to the size of the business.
http://www.notepage.net/download/npnv3.exe - 4Mb - Download - Screenshot

Winpopup LAN Messenger
Winpopup is an ideal business solution for secure network messaging without the need of a server. Inform others of your presence or absence by selecting one of the user status options. The winpopup lan messenger includes an auto responder that offers the convenience of sending automatic replies. ... Instant messaging has never been easier to configure and use. ... Get the instant attention of the receiver by selecting the 'high priority' option for the message. ... Thus, you can be in touch with several people and chat different topics without getting confused.
http://www.winpopup-lan-messenger....ds/winpopup-lan-messenger-4.5.exe - 1Mb - 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... KEY FEATURES: True serverless (peer-to-peer) messaging; Proven cross-platform compatibility; All 32-bit Windows versions support; Works over any available network transport protocol (TCP/IP, IPX/SPX, or NetBEUI) No dedicated server or Internet connection is required; Terminal Services/Remote...
http://www.vitalsoundlab.com/files/ltsetup.exe - 2Mb - Download - Screenshot