OfficeSIP Alerter is a simple, easy-to-use and free instant sip messenger. It was not designed for prolonged chat, it is handy when you need to send single message. It is good replacement for old-fashioned Alerter Service.
This software is not reviewed yet.
OfficeSIP Softphone is an audio / video softphone for Windows primarily for use in business scenarios, offering you an efficient and easy way of communication for free.
OfficeSIP Messenger provides enterprises with advanced instant communications for free. Compatible with Office Communications Server 2007, the free softphone delivers reliable performance combined with trouble-free deployment and management.