About // foss.events

Planet Earth in its late 2010s: Europeans are facing massive right-wing populism leading into an an uprise of right-wing movements in most parts of the continent. In just a little of time, nationalist parties and conservative leaders are tearing down fundamental freedoms and political freedoms that have taken decades to be introduced and established. Once crossing borders becomes a privilege again, the European society will get dispersed.

FOSS does the opposite. It guarantees everyone fundamental freedoms and empowers political freedom. Their events, FOSS events, respectively build moments of time in which Freedom enthusiasts across the continent come together to share and exchange knowledge in a friendly and collaborative way. Exactly what we need to grow and live (in) a free society. We need freedom of exchange, we need human cooperation as a breeding ground for creativity and inspiration, for peace and mutual understanding. Freedom of people - just as freedom of code - is fundamental to Free, Libre and Open Source Software and their communities and a requirement to collectively construct our commons.

// foss.events is here to help growing a free society. As long as inner-European borders can still be crossed and international events are possible, we encourage you to get to know and network with each other. Create international organisations, form resilient communities and build friendships between each other across borders. Go to a FOSS event in another country this year, 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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// 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.

This website is a living body. It started as a simple list, written in an Etherpad and shared in the Fediverse and now grows into a database-driven web-project for and by the FOSS community to help connecting people and events. If you are interested to join, get in contact. Or if you like to improve something, you can open an issue on github. 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 page is handmade and published as FOSS under AGPLv3. You find the code on github.

The data is published as open data, licensed under the Open Data Commons Open Database License (ODbL) by // foss.events.


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. Because apart from the actual naming and the details in the semantics, all these names technically refer to the same kind of software: 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.

Let us unite 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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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 all about putting together and spreading the most comprehensive collection FOSS events in Europe. Often, these are all kinds of conferences but can also be meetings, *-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, licensed under the Open Data Commons Open Database License (ODbL) by // foss.events.

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 may distribute the result only under the same licence. The full legal code explains your rights and responsibilities.

Concretely, we ask you to credit “// foss.events” and that you make it clear that the data is available under the Open Database License. You may do this by linking to this copyright page.

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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. The easiest option is to simply copy-paste the URL of the event into the body section of an email and after checking we will list it here. Also if you see that some information is missing on our side, use the same email-address and send us any missing information of the event.

If you are an organiser or you have 5 minutes of time, it would be of such a great help to this project if you can use this advanced email-template and help us with collecting all necessary information about an event. If you have trouble understanding our data set, check the legend [↑] for an explanation.

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

Thank you so much for your contribution!

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// foss.events is hosted using Green Energy, checked by the The Green Web Foundation:

This website is hosted Green - checked by thegreenwebfoundation.org

And according to the Website Carbon Calculator, // foss.events is cleaner than 98% of websites tested \°/

Websitecarbon.com says: This website is cleaner than 98% of websites tested

Only 0.01g of CO2 is produced every time someone visits this website.

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// 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!
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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 all FOSS enthusiasts and everyone else who seeks living in a Free Society. In its daily operations, it is run by some friendly Free Software geeks who simply feel like doing what we feel to be good. If you are looking for direct contact, reach out to Erik Albers (concept), Michael Weimann (technical lead) or Max Mehl (department of good advice).

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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