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Zimbra Collaboration
Developer(s) Zimbra, Inc.
Initial release 2005; 10 years ago (2005)
Stable release 8.6.0 GA / December 17, 2014; 11 months ago (2014-12-17)
Development status Active
Type Collaborative software
License Zimbra licensing
Website www.zimbra.com

Zimbra Collaboration Suite (ZCS) is a collaborative software suite, that includes an email server and web client.

Zimbra was initially developed by Zimbra, Inc., and first released in 2005. The company was subsequently purchased by Yahoo in September 2007,[1] and later sold to VMware on January 12, 2010.[2] In July 2013, it was sold by VMware to Telligent Systems[3] which changed its name to Zimbra, Inc. in September 2013.[4] It was then acquired by Synacor Inc on 18 August 2015.[5]

According to former Zimbra President and CTO Scott Dietzen, the name for Zimbra is derived from the song "I Zimbra" by Talking Heads.[6]


The software consists of both client and server components, and a desktop client. Two versions of Zimbra are available: an open-source version, and a commercially supported version ("Network Edition") with closed-source components such as a proprietary Messaging Application Programming Interface connector to Outlook for calendar and contact synchronisation.[7]

Zimbra Desktop is a full-featured free desktop email client.[8] Development was discontinued under VMware's stewardship in 2013 but has been restarted in February 2014. In addition, the webclient features an HTML5 offline mode starting with version 8.5.[9]

The ZCS Web Client is a full-featured collaboration suite that supports email, group calendars, and document sharing using an Ajax web interface that enables tool tips, drag-and-drop items, and right-click menus in the UI. Also included are advanced searching capabilities and date relations, online document authoring, "Zimlet" mashups, and a full administration UI. It is written using the Zimbra Ajax Toolkit.[10]

The ZCS Server uses several open source projects (see the section, Included open source projects). It exposes a SOAP application programming interface to all its functionality and is also an IMAP and POP3 server. The server runs on many Linux distributions.[11] Starting with ZCS 7.0 OS X Server support was dropped.

ZCS can synchronize mail, contacts, and calendar items with open-source mail clients such as Evolution and also with proprietary clients such as Microsoft Outlook and Apple Mail, either through proprietary connectors or using the ActiveSync protocol,[12] both available exclusively in the commercially supported version. Zimbra also provides native two-way sync to many mobile devices (Nokia Eseries, BlackBerry, Windows Mobile, iPhone, Android).[7]

Software license[edit]

Starting with version 8.5 the Zimbra Collaboration Suite (ZCS) source code is available under the terms of the GNU General Public License version 2 (backend) and the Common Public Attribution License version 1 (frontend).[13]

Previously it was released under the Zimbra Public License (ZPL). The Free Software Foundation accepts the license as being a free software license and refers to it as being identical to the Yahoo! Public License with the exception that Zimbra, Inc. provides the license, rather than Yahoo!.[14]

Included open source projects[edit]

The ZCS Server uses open source projects such as:[15]

It previously used:

  • MySQL (last used in version 8.0)
  • Apache Tomcat (last used in version 4.5)
  • Perdition mail retrieval proxy (until 4.5)

See also[edit]


  1. ^ Zimbra.com (2007-09-17). "Yahoo! Acquires Zimbra". Zimbra.com. Retrieved 2010-05-30. 
  2. ^ Vance, Ashlee (2010-01-13). "VMware Gently Nudges Microsoft with a Zimbra". New York Times Bits Blog. Retrieved 2010-05-30. 
  3. ^ Henry, Tiffany (2013-07-15). "Telligent Acquires Zimbra from VMware". Telligent. Retrieved 2013-07-15. 
  4. ^ Henry, Tiffany (2013-09-25). "Zimbra Unveils Integrated Team, Culture and Vision for People-Centered Collaboration at User Group Conference". Telligent. Retrieved 2013-12-15. 
  5. ^ "Synacor Agrees to Acquire Zimbra, a Leading Provider of Open Source Based Email and Messaging Software". Global News Wire. Retrieved 18 August 2015. 
  6. ^ Dietzen, Scott (2005-09-12). "So what's a Zimbra?". Zimbra Blog. Retrieved 2013-01-17. 
  7. ^ a b "Zimbra Compatibility with Other Desktop Clients". VMare Zimbra Official Web Site. VMware Zimbra. Retrieved 8 January 2013. 
  8. ^ "Zimbra Desktop". VMare Zimbra Official Web Site. VMware Zimbra. Retrieved 8 January 2013. 
  9. ^ "Zimbra Collaboration 8.5: Anytime, Anywhere, Any Device". Zimbra Blog. Zimbra. Retrieved 5 March 2015. 
  10. ^ "Zimbra Documentation for the Zimbra Web Client". VMare Zimbra Official Web Site. VMware Zimbra. Retrieved 8 January 2013. 
  11. ^ "Zimbra Open Source". Zimbra Official Web Site. Zimbra. Retrieved 8 January 2013. 
  12. ^ "Exchange ActiveSync(EAS) Outlook 2013". Zimbra Official Wiki. Zimbra. Retrieved 5 March 2015. 
  13. ^ "OSI Licenses for Zimbra Collaboration Open Source Edition". Jon Dybik. Retrieved 2014-06-05. 
  14. ^ "Various Licenses and Comments about Them". Free Software Foundation. Retrieved 2011-07-08. 
  15. ^ "Zimbra Components". Retrieved 16 July 2014. 

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Zimbra — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

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The earnings were better than the loss of 6 cents per share that analysts were expecting. • Raising expectations – With its acquisition of email and messaging software provider Zimbra now complete, Synacor hiked its revenue guidance for the current ...
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Synacor CEO Himesh Bhise says the acquisition of Zimbra Inc. will help the company in several ways. It will give Synacor a larger footprint in providing email services, sends the Synacor name into new markets around the world and adds a steady new line ...

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