Loading Content...



Discover Kolab

Learn what Kolab can do for you, and what professional support and service options exist.


Kolab Now!

Can't wait? Want Kolab right now! Then take advantage of our 30 day trial.


The Kolab Hub

Jump into the conversation on the web forums and get involved!


Visit the blog

Insight, news and banter from the Kolab crew.


Feel the Source

The official Kolab development platform facilitated by Phabricator.



Read all about it. Swot up on your Kolab knowledge.


Issue tracker

All software has bugs. This is where we catalog and then mercilessly crush ours.



Go on, you know you want to.


Build Service

Watch the packages build, or roll some of your own.


Mailing lists

Developer discussions in archived mailing lists.



Kolab is for everyone! Translate Kolab into your favorite language so no one is left out.



You can chat with others in the community on #kolab on irc.freenode.net

Many people have taken advantage of Kolab due to its no compromise approach on privacy and data protection. collaborate in confidence.

Georg Greve, CEO, Kolab Systems AG

The Kolab Story

The Things you Should Know


About us

Who are we?

We are the people who make Kolab, a highly scalable and secure collaboration platform that provides shared email, calendaring, notes, tasks, file cloud, tagging and much more. We ensure that you can use Kolab from the operating system and device of your choice, and that your privacy and security is in good hands as you do so. We could write pages covering all the features of Kolab, and we have: you can learn more about what Kolab has to offer here.

Kolab is used by Fortune 50 companies and small start-ups alike, by Germany's BSI, large municipal governments, ISPs and ASPs, school systems ... and people just like you who host their own private instance of Kolab for themselves, friends and family.

Kolab does all of this with 100% Free and open source software. It is developed in the open by a global community, with Kolab Systems serving as the project's steward. Visit the resources section of this page to find out how you can be a part of this!

Professional support is also available for Kolab from Kolab Systems, and you can even start using Kolab in a matter of moments by visiting Kolab Now which offers several hosting plans.


Our Mission

Why we get up in the morning

We develop Kolab with a purpose that is reflected in every line of code, every release and every process: to deliver freedom through collaboration.

  • Open

    Kolab is 100% Free software and uses Open Standards for storage and communication protocols. It is developed in the open and anyone with the skills and motivation can participate in the creation of Kolab. We also work openly with upstream development communities to ensure the best experience for everyone.

  • Private

    Kolab respects your privacy. No backdoors, no compromises on encryption, no phoning home. Kolab Systems itself is based in Switzerland, where privacy is king.

  • Secure

    Kolab is designed for security: service isolation, using safe languages, security audits of the code base, and the necessary uncommon-sense and elbow-grease to get us there.

  • Scalable

    Kolab's service oriented architecture and efficiency at the component-level allows Kolab to be run on a Raspberry Pi with enough juice for a family, while also supporting geographically spread clusters using modern hypervisor and containerizaton technology to serve millions of users from a single instance. This is pretty much the definition of "unparalleled scalability".


The community

How to be part of it

Kolab's community of users, deployers, designers and developers work together daily to continuously improve the various server and client components that make up Kolab.

Getting involved is easy and rewarding: install Kolab, start asking questions in the Hub forums or on the mailing lists, and find your niche. And there are a lot of niches to be occupied! Within Kolab there are web applications, desktop and mobile apps, UX to be designed, graphics to be refined, documentation to be written, text to be translated, conferences to attend and promo materials to be built and spread. No matter what your skill set is, if you have the passion for collaboration, you can join us in making Kolab better!

The resource tiles above are your stepping stones into the Kolab community. See you there!

Follow Us