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Zimbra, a Yahoo! company, is the leader in open source, next-generation messaging and collaboration software. We built Zimbra Collaboration Suite (ZCS) with the belief existing email and calendaring solutions are broken- the result is an innovative experience for end-users and system administrators.

ZCS integrates your entire organization. We emphasize compatibility with today’s diverse desktop and application environments. This means, for instance, desktop users in Outlook can share their calendar with peers who use Apple iCal or Zimbra Desktop on Linux.

ZCS streamlines your workflow and saves time. Our browser-based AJAX client delivers a richer experience with a message conversation view and visual search builder that makes multi-gigabyte inboxes easier to use. We also integrate 3rd party applications as “mash-ups” via web services so you can view CRM data, maps, or anything else without leaving the context of a message.

ZCS uses open technology. The Zimbra Server is built with open technology and runs on Linux and Mac OS X; think of it as your open source Exchange alternative. The Open Source Edition is free, we also offer a Network Edition with Zimbra support.

Key customers include service providers, higher education institutions, and Fortune 1000 enterprises.

http://zimbra.com