Zarafa (software)

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Stable release 6.20.11, 6.30.6
Operating system Linux
Type Groupware
License AGPL/Proprietary

Zarafa is a European open source collaborative software solution developed in Delft, the Netherlands. It provides email storage on the server side and brings its own Ajax-based mail client called WebAccess. All server side components and the WebAccess of Zarafa are published under the AGPL license. Advanced features are available in commercially supported versions ("Standard", "Professional" and "Enterprise" (different feature levels)[1]). The community edition supports three Outlook users for free[2].

Zarafa is designed to integrate with Microsoft Office Outlook and is meant as an alternative to the Microsoft Exchange Server[3]. The WebAccess has the same "look-and-feel" as the Outlook desktop application. People used to working with Outlook will be able to use the WebAccess without any problems. Besides the personal address book, calendar, notes and tasks, "Public Folders" and shared calendar functionalities (inviting internal and external users, resource management) can be handled by the software as well.

On 18th of September 2008 Zarafa launched the full server side stack under the Affero General Public License[4]. The open source community version can be downloaded at

The company that develops Zarafa has used Connectux as a tradename but is now called Zarafa.



Zarafa provides its groupware functionality by connecting the Linux-based server with Outlook clients using MAPI. The communication between server and client is based upon SOAP technology. The secure Outlook connect is realized using HTTPS. All data is generally stored in a MySQL. Attachments can be saved on the filesystem. The Zarafa server can get its users information from LDAP, Active directory, Unix users or the MySQL database. The webmail is based on AJAX technology, with a PHP backend using a MAPI php extension. Other clients can connect via POP3, IMAP and iCalendar.

The project Z-Push was initiated by Zarafa in October 2007[5]. It supports ActiveSync compatible devices (Symbian, Pocket PC, iPhone (firmware 2.X), Nokia (mail4Exchange)) implementing the ActiveSync protocol and using the Incremental Change System (ICS) provided by the PHP-MAPI extension.

Zarafa is part of the OpenMapi project[6] which is developing an open groupware API based on MAPI.

Supported clients


  • Addressbook
  • Calendar
  • Notes
  • Tasks
  • Personal Folders / Public Outlook Folders
  • Permissions for every User and Folder configurable
  • Meeting invitation and free/busy option
  • Resources planning
  • POP3
  • IMAP
  • iCalendar
  • Caldav
  • PDA synchronization via Z-push
  • BlackBerry integration over BES
  • Out-of-office message
  • Brick-level backup
  • Single sign-on

Screen Shot

Screenshots are available at the Zarafa homepage.

Integrated in open source

Zarafa is compatible / integrated with many other open source projects.

Integration with other applications

Zarafa developed and recently released an integration framework for 3rd party software. On the serverside the Zarafa calendar, contacts, tasks and notes can be replicated in realtime to other applications using the replication framework Z-Merge. A demo integration for SugarCRM and O3spaces was realized. The Alfresco ECM system was integrated using the Webaccess Plugin System. The user is able to archive attachments directly to Alfresco and send e-mails attaching files from the Alfresco repository. An integration with OpenERP is also available.

A overview of integrated applications and an online demo (incl. SugarCRM and Alfresco ECM) can be found at the homepage.



External links

de:Zarafa (Software)

pt:Zarafa (Software)

Personal tools

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