Kolab is a groupware system that provides a comprehensive and flexible solution for workgroups. Email, contacts, and group calendars can be managed via the Web, Windows/Outlook, and Linux/KDE. It supports offline synchronization and full seamless support of mixed client environments because the Kolab-XML storage format is fully open and avoids MAPI/TNEF.
| Tags | Office/Business groupware Communications Email Mail Transport Agents Post-Office IMAP LDAP |
|---|---|
| Licenses | GPLv3 AGPLv3 LGPLv3 |
| Operating Systems | POSIX GNU/Linux |
| Implementation | C Perl PHP |
| Translations | German English |
Recent releases


Release Notes: The Kolab Groupware Server is now feature complete and ready for the first alpha. Integration into existing user directory setups, security, and scalability were improved. It is now possible to scale all functional components of Kolab separately. Also, there is a new unified command line utility for administrative tasks.


Release Notes: This release fixed some bugs including an annoying build error that affected many people and the range header DoS vulnerability in the Apache Web server.


Release Notes: This release not only includes a lot of bugfixes (most of them in the Web client) but also some important security fixes in core components like the Apache HTTPD server, PHP, and Cyrus IMAPd. Users are strongly encouraged to upgrade.


Release Notes: This is the second bugfix release for the Kolab 2.3 series. Most fixes are in the Free/Busy stack and the automatic resource handling. The update to postfix 2.8 brings a lot of new features like postscreen and multi-instance support, however none of them is enabled by default to allow smooth upgrades. The ActiveSync configuration introduced in Kolab 2.3.1 has slightly been reworked and Z-push 1.5.3 makes synchronization with mobile devices more reliable.


Release Notes: This release contains 20 enhancements and fixes compared to 2.2.3.