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about: // foss.events

Planet Earth in its late 2010s: Europeans are faced with an uprise of right-wing populism and movements in most parts of the continent. Nationalist ideologies, their parties and conservative leaders are tearing down fundamental freedoms, our democratic checks and balances. Freedoms that have taken decades to be introduced and to be established. While borders get locked within a day.

FOSS offers the opposite. It guarantees fundamental freedoms for everyone and rewards collective knowledge sharing. FOSS communities and their events build moments of time in which Freedom enthusiasts across the continent come together to share and exchange knowledge in a friendly and collaborative way. To grow and live (in) a free society, we need freedom of exchange, knowledge and collaboration. Freedom of people - just as freedom of code - is fundamental to Free, Libre and Open Source Software and their communities.

// foss.events connects freedom events with people who urge growing a free society. As long as inner-European borders can be crossed and international events are possible, we encourage you to get to know each other. Create international organisations, form resilient communities and build friendships between each other across borders. Go to a FOSS event in another country, an event where you have never been before. Get to know new people there, their habits, knowledge and backgrounds. Help each other and listen to each other. And above all do what you always love to do:

Use, study, share and improve. Together.

No borders. No nations.

Just humans.

And tech.

No DRM. No firewalls.

Just freedom.

And humans.

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If you know of an event that matches our criteria and you do not see it mentioned in our list of events, please contribute.

If you are an organiser or you like to see your favorite event on // foss.events and you have 5 minutes of time, it would be of such a great help to this project if you can help us with adding useful information about an event. If you have trouble understanding our data set, check the legend for explanation.

Add a new event

Or, if you feel comfortable to send us the information about your event as a pull request, you can also edit the tab-separated csv-data file for each year of your event in /data/ on GitHub.

Also you are welcome to join our Matrix community room and talk / discuss any event there. Or you simply copy-paste the URL or the update of en event into the body section of an email and after checking we will list/update the event.

Thank you so much for your contribution!

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All event-data on // foss.events is collected by hand, or shared with us by the community. We try to regularly re-check the content on the site but in any case we guarantee neither completeness nor correctness of the data shown. In doubt, please confirm with the information given on the event's own website. If you find an inaccuracy on our site, please help to fix it by contributing. Find our criteria and legend below to understand our data-set:


// foss.events is about creating and sharing the most comprehensive collection of FOSS events in Europe and online. That means events that are happening in Europe or that are organised by an association or any group of people with their physical representation or being in Europe. While we believe in international communities as well, for now we put a focus on connecting Europeans or anyone else who is interested in their events.

Valid "events" are all kinds of conferences and unconferences, hackmeetings, *-a-thons, camps, festivals, exhibitions and other kind of events - as long as they match the following criteria:

If you know about a Free, Libre and/or Open Source Software event in Europe that matches this criteria and is not yet in our list, please contribute.



All data on https://foss.events is open data and copyleft. The databases are licensed under the Open Data Commons Open Database License (ODbL). Any individual content of these databases - except any values in the field "Self-description" - is licensed under the Creative Commons CC-BY-SA. (more details)

That means that you are free to copy, distribute, transmit and adapt our data, as long as you credit "// foss.events" and so its contributors. If you alter or build upon our data you have to re-publish the data from this page as Open Data.

If you use our data, please get in touch we would love to hear about your cool project!

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Freedom Privacy Sustainability Diversity

// foss.events fos(s)ters knowledge sharing by connecting people beyond borders and nations via the most comprehensive collection of Free, Libre and/or Open Source Software (related) events happening in Europe.

What started as a simple list, written in an Etherpad and shared in the Fediverse now grows into a database-driven web-project for and by the FOSS community to help connecting people via their events. If you are interested to help us, get in contact. Also drop by once in a while to enjoy the latest features : )


We believe in the 4 freedoms to use, study, share and improve any software. Our code is handmade and published as FOSS under AGPLv3. All data is published as open data, all text is published CC-BY-SA 4.0.


// foss.events does not track you. We do not collect any data or behaviour on our sites. The Electronic Frontiers Foundation's Privacy Badger gives us a Hooray for Privacy:

Electronic Frontier Foundation's Privadcy Badger says: No trackers detected: Hooray for Privacy

// foss.events supports de-Googlization. Our website is self-coded [] and we do not use Google for anything! Google tracking exposed confirms: No analysis, no trackers, no ads.

kreuzberg.google.tracking.exposed says: This site is free from Google trackers!


// foss.events is hosted using Green Energy:

This website is hosted Green - checked by thegreenwebfoundation.org

// foss.events is continuously optimised to reduce CO2 emissions:


There are reasons and arguments why some people prefer FOSS over FLOSS or vice versa, why some refer to Open Source and others to Free Software or Libre Software. And who knows, potentially in the next decade even a new term will be created ... (We heard sustainable software is an upcoming candidate.)

At // foss.events we love this diversity. All these terms have their relevance and they allow us to put slightly different emphasis on the same technologies and ideals. Because apart from the actual naming and the details in the semantics, all these names technically refer to the same kind of software and sharing culture: Software that is published under a license that grants any user the 4 freedoms to use, study, share and improve the software without limitations. That is why on // foss.events we will not prefer one name over the other and in case we use one, it is representative to all the others.

Unity in diversity: No matter the name, if your event is about the four freedoms of software your event is part of // foss.events!

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Whenever you feel like giving us your feedback, you have a good idea or you want to give us a digital hug, you can simply send us an email. Also consider following us on Mastodon or Twitter to enjoy our toots and tweets around foss-events in Europe.


// foss.events is a project for and by FOSS enthusiasts and everyone who seeks living in a Free Society. Currently it is run by some friendly Free Software geeks who simply feel like doing what we feel to be good. You can join if you like. If you are looking for direct contact, reach out to Erik Albers (concept) or Michael Weimann (technical lead).

The domain foss.events was initially registered and run by OpenRheinRuhr e.V. and later generously shared with // foss.events. Thank you so much for this priceless contribution!

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