OfficeIntercom lets you use your computer to talk to any other person on your office network (LAN). It works like an intercom. After each person installs OfficeIntercom on their computer, you will be able to speak to any one of them simply by clicking on their name on OfficeIntercom or holding down any assigned hot-key. You speak into your computer's microphone and will be heard through the other person's computer speakers.
MSG
MSG is a program for sending "Net Send" messages from a nice graphical interface. Features include the ability to search your workgroup or domain for available computers, the ability to send to entire workgroups or domains, and more... (Freeware)
DirectTalk for MSN Messenger
DirectTalk for MSN Messenger makes it possible to talk with anyone using MSN Messenger voice chat or video chat even when behind NATs where attempts to talk using MSN Messenger voice & video chat usually fail.
BLANCHESOFT SMSJoy
Sending SMS to your firends, coleagues or anybody around the world has never been easyer. Select a SMS gateway from the list and create an online account. In minutes you will send SMS to virtually any cellular/mobile phone .
RealTimeQuery
RealTimeQuery is the perfect tool for offering online support to your customers. The program enables your users to contact you in real time while visiting your website.
Galeax
You can create one or several different avatars with graphic or animated nickname Create own Voice Video chat room with many features such as graphics or animated logo, online games, draw board, background music, file transfer, photo gallery and more