Librevents: “liberating” data from Big Tech
12-28, 13:30–14:00 (Europe/Berlin), HIP - Track 1 - Room 5
Language: English

Librevent is a browser extension allowing any user to copy and republish (“scrape”) data about events posted on proprietary platforms onto free libre and open source decentralized networks.

For now, Librevents focuses on liberating events data (description, date and time, location) from Facebook onto Mobilizon, an event-management platform alternative part of the Fediverse*.

The intention behind Librevents is to feed alternative ethical platforms like Mobilizon with content, in order to help them counter the “network effect” (users staying on Facebook because the information is only available there). The concept of “data liberation” could later be applied to other types of contents and platforms.

The data we liberate is initially posted as a “public event” by the organizer. We make this data truly “public” and available on free platforms, without violating the organizer’s original intentions.

*Fediverse: a federated network of free libre and open source alternatives to Twitter, Facebook, Youtube. The networks within the Fediverse communicate together through the ActivityPub protocol.

In 2021, we have been developing Mobilize.Berlin, an event platform based on Mobilizon, intended for the club and music scene in Berlin.
In 2022, we have kept improving Librevents within our Mobilize.Berlin community, organizing two hackathons at the c-base hackerspace in Berlin.

In this talk we will present the browser extension Librevents, available to download and allowing any user to scrape and republish themselves events onto a Mobilizon instance.

Our goal is to grow our community of developers, event organizers, and Mobilizon instance administrators in order to improve Librevents, to promote Mobilizon and the Fediverse, and make data liberation happen.

keywords: Fediverse, Mobilizon, data liberation, adversarial interoperability

Free Software advocate working on issues related to digitization and environmental harm, proponent of autonomous (digital) spaces.

also known as vecna, founder of, previously has spent many years in Developer, researcher, but first and foremost activist for digital rights. "crypto" means "cryptography"