The Kolab Groupware Solution offers flexible Personal Information Management (PIM) for professional deployments in companies of almost any size. But since it is Free Software, it can also be used by individual users who care about being in control of their personal information.


What is Kolab?

Kolab is a secure, scalable and reliable groupware server. It is formed by a number of well-known and proven components or the standards tasks such as E-Mail, Directory and Web Service.

Five platforms. One application

The Kolab smart client is available for GNU/Linux, Windows, Mac OS X, Maemo/Meego and Windows Mobile. It supports many devices and can be used with keyboard, mouse and touchscreen.


Connect various mobile devices through ActiveSync: Android, Maemo/MeeGo, Symbian, iPhone, Windows Mobile and BlackBerry (via connector).


Kolab benefits from a security conscious design and strong cryptography based on open standards S/MIME and OpenPGP.

Highly scalable

Starting with the single business server for small and medium enterprises, Kolab smoothly scales up to scenarios with hundreds of thousands of users.

Free and Open

Gives you the rights and benefits of a Free Software application based on Open Standards. Everybody is free to use, study, share and improve Kolab.


Kolab is backed up by a vendor for professional services and support that is also actively engaged in the development.