PUBLIC MARKS with tags messaging & collaboration

Zimbra - for Government and Non-Profits The Zimbra Collaboration Suite (ZCS) provides state-of-the-art messaging and collaboration solutions (email, address book, calendaring, web documents, etc.). Can be configured to work with the Asterisk VOIP phone system.

Zimbra Collaboration Suite - enterprise messaging and collaboration.

Group messaging and enterprise instant messaging solutions.

Stalker Software is the technology leader in messaging and collaboration for a multitude of operating systems. We meet the needs of any size operation, from 10 corporate collaboration and email users to 58 million wireless subscribers. Our flagship product CommuniGate Pro not only supports email and calendaring but is a SIP based server for Instant Messaging, VoIP and video conferencing as well as