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Zimbra logo.png
Developer(s) VMware, Inc.
Initial release February 8, 2009 (2009-02-08) (3.0)[1]
Stable release

9.0.0  (April 7, 2020; 2 years ago (2020-04-07))

Preview release none [±]
Written in Perl, Java, JavaScript
Operating system Cross-platform
Available in Multi-lingual
Type Productivity software
Project management software
License(s) Zimbra Public License
Website Zimbra.com

Zimbra is project management and productivity software software designed to help businesses collaborate better. The software is available both as a commercial fee-based product and a free open-source product called Zimbra Collaboration Server (ZCS) Open Source Edition.

Product history

Zimbra originated from Zimbra, Inc., which was founded in 2003.[2] It's not clear how much work was being conducted on the software from 2003 to 2004, but Zimbra unveiled a new website in the fall of 2005, announcing the beta launch of its open-source Zimbra Collaboration Suite (ZCS).[3] An official announcement followed soon after in October[4], with an associated SourceForge project starting on November 17.[5] After a series of betas, the first stable open-source version of ZCS was released on February 8, 2006.[1]

On September 17, 2007, Zimbra, Inc. announced it had been acquired by Yahoo! Inc., causing some users to be wary of the software's future.[6][2] Shortly after the acquisition, ZCS source code stopped appearing on SourceForge.[7] Zimbra releases were still available on the Zimba.com website after the acquisition, however.[8]

On January 12, 2010, open-source developer VMware, Inc. announced it had bought Zimbra from Yahoo! Inc., which needed to "get rid of non-core assets" as part of a refocusing effort.[9] Releases of the open-source ZCS as well as the company's commercial offerings continued via the website.

In August 2015, Zimbra was acquired yet again, this time by Synacore.[10]


The features of the free open-source Zimbra Collaboration Server include[11]:

  • AJAX e-mail
  • POP/IMAP e-mail support
  • address book
  • calendar
  • task management
  • "Briefcase" application
  • CardDAV, iCal, and CalDAV support for contacts and calendars
  • support for mobile devices

Hardware/software requirements

Consult the documentation (PDF) for more information about the installation requirements of the open-source ZCS.

Videos, screenshots, and other media

  • A few videos of ZCS can be found on the site.
  • A demo of the commercial Network Edition can be found here. Registration is required.
  • The open-source ZCS documentation can be found here.

Entities using Zimbra

Further reading

External links


  1. 1.0 1.1 "Zimbra Launches Zimbra Collaboration Suite 3.0, With General Availability". Zimbra, Inc. 8 February 2006. Archived from the original on 09 September 2006. http://web.archive.org/web/20060909231253/http://www.zimbra.com/about/zimbra_pr_2006-02-08.html. Retrieved 28 December 2012. 
  2. 2.0 2.1 Perez, Juan Carlos (23 September 2007). "Zimbra Users Vexed by Yahoo Deal". PC World; ABC News. http://abcnews.go.com/Technology/PCWorld/story?id=3637186&singlePage=true. Retrieved 28 December 2012. 
  3. "Zimbra - Home". Zimbra, Inc. Archived from the original on 23 September 2005. http://web.archive.org/web/20050923123048/http://zimbra.com/. Retrieved 28 December 2012. 
  4. "Zimbra Unveils Innovative, Open Source Collaboration Software and Messaging Server". Zimbra, Inc. 5 October 2005. Archived from the original on 25 November 2005. http://web.archive.org/web/20051125070659/http://zimbra.com/about/zimbra_pr_2005-10-04.html. Retrieved 28 December 2012. 
  5. "Zimbra Collaboration Suite". SourceForge. http://sourceforge.net/projects/zimbra/. Retrieved 28 December 2012. 
  6. "Yahoo! Announces Agreement to Acquire Zimbra". VMware, Inc.. 17 September 2007. http://www.zimbra.com/about/zimbra_pr_2007-09-17.html. Retrieved 28 December 2012. 
  7. "Zimbra Collaboration Suite > Files > Zimbra Source". SourceForge. http://sourceforge.net/projects/zimbra/files/Zimbra%20Source/. Retrieved 28 December 2012. 
  8. Holder, John (21 November 2007). "ZCS 4.5.10 Has Been Released". VMware, Inc.. http://blog.zimbra.com/blog/archives/2007/11/zcs-4510-has-been-released.html. Retrieved 28 December 2012. 
  9. Vance, Ashlee (13 January 2010). "VMware Gently Nudges Microsoft with a Zimbra". The New York Times. http://bits.blogs.nytimes.com/2010/01/13/vmware-gently-nudges-microsoft-with-a-zimbra/. Retrieved 28 December 2012. 
  10. Nicastro, D. (19 August 2015). "Zimbra Acquired Again, This Time by Synacor". CMS Wire. http://www.cmswire.com/social-business/zimbra-acquired-again-this-time-by-synacor/. Retrieved 05 January 2016. 
  11. "Compare Zimbra Products". VMware, Inc. http://www.zimbra.com/products/compare_products.html. Retrieved 28 December 2012.