My random thoughts about politics, society and technology

June 2, 2026 5 minutes reading time

Building Digital Sovereignty: Ten Years of Nextcloud

On June 2nd, 2016, Nextcloud was born. While the celebrations in our Berlin office are already in full swing, this is my personal retrospective. Shortly before that, I wrote a somewhat cryptic blog …

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July 4, 2023 4 minutes reading time

Nextcloud and OpenID-Connect

This is a updated version of a old blog post from 2020. The guide here was tested with Nextcloud Hub 5 and Keycloak 21.1.2. Please keep in mind, the main goal of this article is to get Keycloak up and …

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March 7, 2020 1 minutes reading time

Real-time communication and collaboration in a file sync & share environment - A introduction to Nextcloud Talk

Nextcloud envolved from a file sync & share solution to a full featured but still modular collaboration platform. Nextcloud Talk is a component which becomes more and more popular and enables …

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November 17, 2019 3 minutes reading time

New challenges for Free Software business models

Different Free Software business models evolved over the past and the most successful are threaten these days by the raise of IaaS providers. What does this mean for the future of economical success …

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January 2, 2019 4 minutes reading time

Cultural Techniques

These days I looked up the German word “Kulturtechnik” at Wikipedia which translates to “cultural techniques” in English. Surprisingly there is no English Wipipedia article for …

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February 1, 2018 2 minutes reading time

CS3 Workshop 2018 - Global Scale and the future of Federated Cloud Sharing

Enable large organisations to scale Nextcloud beyond the typical limitations. As part of Global Scale we will also work on Cloud Federation 2.0, based on the Open Cloud Mesh specification

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November 14, 2017 9 minutes reading time

Software freedom in the Cloud

What does software freedom actually means, in a world where more and more software no longer runs on our own computer but in the cloud? I keep thinking about this topic for quite some time and from …

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September 25, 2017 1 minutes reading time

Nextcloud Conference 2017: Free Software licenses in a Nutshell

Lightening talk about Free Software licensing and how it is handled at Nextcloud.

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February 14, 2017 4 minutes reading time

The most sincere form of flattery

Nextcloud now exists for almost exactly 8 months. During this time we put a lot of efforts in polishing existing features and developing new functionality which is crucial to the success of our users …

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December 13, 2016 4 minutes reading time

Cloud Federation – Getting Social

With Nextcloud 11 we continue to work on one of our hot topics: Cloud Federation. This time we focus on the social aspects. We want to make it as easy as possible for people to share their contact …

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September 29, 2016 1 minutes reading time

Keynote at Open16 - Restore the Internet

Keynote at the Open16 on how Nextcloud can help to restore a free, decentralized and open Internet.

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July 21, 2016 3 minutes reading time

Transfer Public Links to Federated Shares

Creating public links and sending them to your friends is a widely used feature of Nextcloud. If the recipient of a public link also has a Nextcloud or ownCloud account he can use the “Add to your …

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July 4, 2016 6 minutes reading time

History and Future of Cloud Federation

I’m now working for about two years on something called Federated Cloud Sharing. It started on June, 23er 2014 with the release of ownCloud 7.0. Back then it was simply called “Server to Server …

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June 15, 2016 5 minutes reading time

Freedom for whom?

This discussion is really old. Since the first days of the Free Software movement people like to debate to whom the freedom in Free Software is directed? The users? The code? The developers? Often …

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May 26, 2016 3 minutes reading time

Road Ahead

I just realized that at June, 1 it is exactly four years since I joined ownCloud Inc. That’s a perfect opportunity to look back and to tell you about some upcoming changes. I will never forget how all …

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March 14, 2016 5 minutes reading time

Federated Sharing – What’s new in ownCloud 9.0

Privacy, control and freedom was always one of the main reasons to run your own cloud instead of storing your data on a proprietary and centralized service. Only if you run your own cloud service you …

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February 12, 2016 6 minutes reading time

The next Generation of Code Hosting Platforms

The last few weeks there has been a lot of rumors about GitHub. GitHub is a code hosting platform which tries to make it as easy as possible to develop software and collaborate with people. The main …

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December 30, 2013 2 minutes reading time

The ownCloud Public Link Creator

ownCloud Share Link Creator – Context Menu Holiday season is the perfect time to work on some stuff on your personal ToDo list. ownCloud 6 introduced a public REST-style Share-API which allows …

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May 28, 2013 3 minutes reading time

Introduction to the new ownCloud Encryption App

Last weekend we released a first preview version of the new encryption app. This wouldn’t be possible without the work done by Sam Tuke and Florin Peter. Thanks a lot for all your work! Let me take …

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May 11, 2012 10 minutes reading time

Free Software, Open Source, FOSS, FLOSS – Same same but different

There are two major terms connected to software you can freely use, study, share and improve: Free Software and Open Source. Based on them you can also find different combinations and translations …

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July 8, 2009 2 minutes reading time

A successful year for the 1. RFC Stuttgart

This year it was the first time I participated at RoboCup tournaments. It was quite stressful but also really exiting and most important: successful! In April the year started with the German Open in …

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May 12, 2009 2 minutes reading time

Fedora and gpg-agent

While it was quite easy to set up my Fellowship smartcard for SSH logins on Debian GNU/Linux following this instructions I never managed to get it working on Fedora GNU/Linux. At some point of time I …

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February 20, 2009 3 minutes reading time

Jabber Mail Notification

I always struggled to find the right mail notification applet for my desktop. Furthermore I always stumble over the question: Why do I have to ask the mail server in a defined time interval “Do I have …

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February 2, 2009 2 minutes reading time

PDFreaders.org launched

Today the Free Software Foundation Europe (FSFE) announced their latest initiative: PDFreaders.org. The initiative started in the Fellowship and is coordinated by the Fellows Hannes Hauswedell and …

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February 1, 2009 2 minutes reading time

A great event is over: KDE 4.2 Release Party and Fellowship Meeting at Stuttgart

At Friday, 30.Jan.09 we had a joint event between KDE and the Fellowship of the Free Software Foundation Europe (FSFE) and it was simply great! Beside a lot of KDE and FSFE people we had a lot of …

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November 8, 2007 1 minutes reading time

Quick Guide to GPLv3

The FSF has released a Quick Guide to GPLv3. This article explains all major changes in an easy-to-understand overview. So it is a good staring point for everyone who wants to understand GPLv3. It is …

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December 15, 2006 1 minutes reading time

Test your knowledge of the GPL and LGPL

While reading some FSF Blogs i found a link to a license quiz where you can test your knowledge of the GPL and LGPL.. If you want to test your knowledge of the GPL and LGPL than try the license quiz. …

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