Free open source app that lets you add an end-to-end encrypted folder to your existing cloud service. It works with popular cloud services such as Nextcloud, DropBox, Google Drive, One Drive, iCloud etc. There are apps for Linux, Mac, Windows, iPhone/iPad and Android.

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Free open source app that lets you view and search reference materials such as Wikipedia, Gutenberg, StackExchange etc without an internet connection. This can be very useful in remote areas, during temporary outages, or during times of turmoil. Kiwix is available for Linux, Mac, Windows, Android and iPhone/iPad. You can optionally also create a self-hosted Kiwix hotspot, so that anyone physically near your server can access your copy of Kiwix through a local connection.

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Open Source Gardens

Organisation connecting gardeners all around the world, encouraging the use of open source seeds and similar philosophies. Posts in English and German.

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Bits & Bäume (“Bits & Trees”)

German campaign group which aims to build bridges between technology fans and environmentalists.

Fediverse address (main account, in German):

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Free open source end-to-end encrypted peer-to-peer messaging system for Android and Linux which can be used online through Tor, or locally through wifi or bluetooth. Because it has local support it can be used even if the internet is shut down or broken, for example at demonstrations or in disaster zones.

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Promotes open geographical data including OpenStreetMap, and posts OpenStreetMap hints and tips. The account is based in the Philippines and promotes OSM contribution there.

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Scientists for Future Deutschland

German branch of the campaign by scientists to save the planet from environmental destruction due to climate change. They are letting the world know the science of climate change, conducting research themselves and helping climate scientists to network.

Fediverse address (in German):


A special version of Linux that aims for maximum privacy and anonymity. Tails runs entirely off a USB stick, it uses the Tor network to connect to the internet, and by default it resets/forgets everything you’ve done when you switch it off. (You can also optionally save encrypted data if you need to keep something.)

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Computertruhe e.V.

Volunteers in Germany who repair abandoned computers so they can be donated to charity.

Fediverse address (main account, in German):

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Independent manufacturer of smartphones that are as ethical as possible. There are fair wages and fair working conditions all the way down the supply chain including the raw materials, the phones are modular so users can replace or upgrade parts themselves, recycled materials are used as far as possible, the phones are supported for as long as possible, and there’s support for de-Googled versions of Android.

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Topio e.V.

German non-profit organisation which helps ordinary people “de-Google” their phones by installing privacy-friendly operating systems. They run events to help with this including workshops, exhibitions, lectures etc.

Fediverse address (main account, in German):

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