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#jam18 III Anual Metadecidim Conference

28 Nov - 29 Nov @



DecidimFest 2023 will take place in Barcelona on October 18, 19 and 20, 2023.


The JAM are the annual conference of Metadecidim, the Decidim community: a free open-source platform of participation for cities and organizations. The JAM were born by the end of 2016 from a participatory process at Decidim Barcelona a Decidim instance in the Barcelona City Council. During 2017 the participation process was transformed into its own community (Metadecidim) in order to set a space for thought, cooperation and public-common work on Decidim.


The JAM are an opportunity to gather with the community, the citizens and in general any person who is in the productive ecosystem of Decidim (institutions, companies and social organizations) to rethink in an open, transparent and collaborative way the future of Decidim so that every day is more useful for the participatory democracy of cities and organizations around the world.

Decidim. From social to political networks

We live in the world of social networks: likes, retweets and hashtags connect us socially... but the reality behind them is different. Social networks are also new private forms of economic profit and power supported by the study and control of collective attention and behavior. In this edition of #JAM18 we will present the alternative to social networks: political networks. Political networks such as Decidim do not conceive their users as consumers but as participants, as political actors who have a safe space to deliberate, take part or decide on the common affairs of their city or organization. In these spaces the participants can build collective intelligences, identities and wills that go beyond the individualistic logic of mere expression, grouping or circulation of personal tastes and preferences. With political networks like Decidim, the decision making affects all of its participants and overcome the interaction logic offered by these corporate social networks with the rest of the collective decision. This political networks are also consciously, because they recognize technology as politics and, to that extent, they are associated with networks and technopolitical communities, such as Metadecidim, which politicize and democratize its own infrastructure.

Internationalization of Decidim

The #JAM18 are celebrated at a crucial moment for the project: as it has been configured as a political network, interest and adoption have grown in various cities and organizations around the world. During #JAM18 you will witness the details behind the latest version of Decidim, which incorporates new political network enhancements and functionalities. We will also present the current state of development of the platform in its technological, community and political layers, the most recent success stories of organizations and administrations that use the platform and the main challenges for the future, such as the governance of the project.

Metadecidim Governance

The #JAM18 are also the showcase of the latest advances in the community governance model. It is an ongoing participatory process that we can consider strategic, as it will define how we will govern ourselves over the next few years. As always do, we are going to meet, debate and rethink collectively and in an open, transparent and collaborative way the present and future of Decidim. Because every day we want it to be more useful for the participative democracy of cities and organizations all over the world. Looking forward to see you!

Motor Group

Ajuntament de Barcelona, Tecnopolítica - IN3/UOC, Localret, Universitat Pompeu Fabra, Eurecat, aLabs


Metadecidim, Decidim, Fundació Ferrer i Guardia, Ciutat Oberta, Colectic, Open Source Politics, Som Energia



JAM18 [ 10:30 - 15:00]

9:30  - 10:00 Registration

10:00 - 10:15 Welcome #JAM18. Gala Pin & Fernando Pindado, Barcelona City Hall

10:15 - 11:15 When we say “open”. Heather Leson, International Federation of Red Cross and Red Crescent Societies

11:15 - 11:45 Coffee break

11:45 - 13:00 Decidim in 3 layers

  • Decidim and political participation. Arnau Monterde (Barcelona City Hall) and Carol Romero (Localret)
  • Decidim: free open source for technoligcal autonomy. Andrés Pereira de Lucena (Asociación Alabs) and Guillem Marpons (free software developer)
  • Metadecidim: an open, technopolitical and networked community. Nuria Alonso (Colectic) and Pablo Aragón (Universitat Pompeu Fabra & Eurecat).

13:00 - 13:30 Participation with Decidim

  • Decidim Organizations. Josan Minguela (Fundació Ferrer i Guàrdia)
  • Participa Som Energia. Yaiza Blanch (Som Energia)
  • Mon opinion in Belgium. Virgile Deville (Open Source Politics)

13:30 - 13:50 Decidim Future. Elisenda Ortega (Barcelona City Hall) and Xabier Barandiaran (UPV/EHU)

13.45 - 14:00 Closing #JAM18

Lunch break [ 15:00 - 17:00]
Democratic Cities BCN [ 17:00 - 20:30]

16:00 - 16:15 Introduction. Arnau Monterde, Barcelona City Hall

16:15 - 17:00 Opening of Democratic Cities BCN

  • Gala Pin, Barcelona City Hall
  • Rukia Lumumba, Jackson People's Assembly

Moderator: Milagros Pérez Oliva, El País

17:00 - 18:00 Democratic governance for social transformation

  • María Sefidari, Wikimedia Foundation
  • Claudina Sarahe, Composites Collective
  • Christian Iaione, Libera Università Internazionale degli Studi Sociali Guido Carli

Moderator: Mayo Fuster Morell, Dimmons - IN3/UOC 

18:00 - 18:30 Coffee break

18:30 - 19:30 The future of the democratic city: ecofeminisms, commons and technology

  • Yayo Herrero, Foro de Transiciones
  • Rubén Martínez, La Hidra
  • Antonio Calleja-López, Tecnopolítica - IN3/UOC

Moderator: Laia Forné, Barcelona City Hall

*Please take note that the activity will be in Spanish and English. Simultaneous translation will be available

Conference Venues

Mercat de les Flors
Carrer de Lleida, 59

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