Open source groupware suite Kolab 3.0 goes live

Open source groupware suite Kolab 3.0 goes live

Summary: The latest version of the enterprise-scale email, calendar, contact and task management suite has been made available.


The latest version of open-source groupware suite Kolab is now available.

Kolab is an enterprise-scale email, calendar, contact and task management suite that is fully open source, freely available, and interoperable with multiple web, desktop, and tablet clients. The Kolab smart client is available for GNU/Linux, Windows, OS X, Maemo/MeeGo and Windows Mobile.

Kolab 3.0 is now on release. Image:

The final release of Version 3.0 of Kolab, launched on Tuesday, features a new web client, based around Roundcube. 3.0 is designed to integrate more easily with user directory setups and to offer improved scalability, allowing all functional components of Kolab to be scaled separately. There is also a new unified command line for admin tasks.

Server components have been rewritten for the 3.0 release. The Kolab daemon now supports mail-flow monitoring, enforces recipient policies, quota and can be extended with Python modules. These modules can handle emails on the fly, allowing uses such as adding corporate footers or in-line translation of emails. Kolab now uses the 389 Directory Server by default, but still supports OpenLDAP.

Version 3.0 also includes a new implementation of the ActiveSync protocol for syncing mobile devices with Microsoft Exchange servers. The switch to the Syncroton implementation should improve performance, allow for more features and easier integration. Credential separation is now supported, allowing a user's mobile credentials to be revoked without compromising their main credentials.

The release features a new customisable, web-based front-end for managing users, groups, resources, domains and roles. It allows role- or group-based plug-ins and settings for the Kolab web client and the enforcing of access policies for the Kolab server. The functionality of the admin panel is also available via API, to make it easy to integrate Kolab admin tasks with existing front-ends.

Kolab 3.0 can now be installed with native packages on Red Hat Enterprise Linux, CentOS and Debian - allowing for easier upgrades and rolling release. OpenSUSE packages are also available.

The format Kolab uses to store data has changed in this release, with calendar data now saved in xCal and contacts in xCard. Kolab's most popular clients, such as Kontact and Thunderbird, already support the new format.

From Kolab 3.0 onwards, the community are aiming for a six-monthly release cycle.

Development of Kolab started in 2001, as an open-source project that was initiated by the German Federal Office for Information Security. Kolab CEO is Georg Greve, the founder and former president of the Free Software Foundation Europe.

Topics: Open Source, Enterprise Software


Nick Heath is chief reporter for TechRepublic UK. He writes about the technology that IT-decision makers need to know about, and the latest happenings in the European tech scene.

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  • looks interesting until......

    ... you go on the site and find no easy install routine other than mention of various open source programmes which need to be installed with a reference to documentation which make it sound like something that needs to be deployed on a server. Shame I was hoping for a neat client that individuals could use to access exchange rather than having to install the bloated Outlook client, which retains all the essential features of Outlooks functionality. Not at this stage something for individuals without any technical knowledge I fear.
  • Exchange exchange!

    Kolab is not an Exchange client. It is Exchange replacement. So, it is a server and a set of clients. The installation is however not very hard. Kolab provides package repositories and setup script.
    Aleksander Machniak