First steps with Decidim
Decidim is a digital platform
for citizen participation
Installing Decidim
You can install it yourself or find someone to help you with tech support.
The right tool for you
For big or small organisations, discover how Decidim can cater to your needs.
Decidim in your city
If your city is thinking of deploying participatory policies, find out how you can convince them to do it.
Is Decidim the right tool for you?
Decidim’s flexible features are designed to serve both small and large collectives, public and private organisations, with hundreds or thousands of potential users.
Explore all featuresBacked by technology, democracy and experience
Code for Japan
Decidim provides customize-friendly architecture so that we can adapt it to our domestic situation.
Read the case study
City of Helsinki
We evaluated seven different kinds of participatory budgeting options to find the right platform to support...
Read the case studyRead more case studies on our blog
Who’s behind the platform?
Metadecidim is the community that collaborates in the design of the platform and the development of the project. Together we design and create new features and report bugs for continuous improvement of the platform.
The Decidim Free Software Association is a democratic association for the governance of the Decidim community.
Nous manquons d'espaces publics pour nous exprimer. Il est important que nous reprenions contrôle de ces derniers. Les plateformes ouvertes comme Decidim font exactement cela. Ce n'est pas seulement ça qui est open-source (pour que d'autres personnes puissent le forker, le réutiliser et construire un processus participatif). Decidim a également ces valeurs que nous voulons refléter dans notre société codée de la manière dont la plateforme est conçue.
Kasia Odrozek
Fondation Mozilla
Grâce à Decidim, nous sommes parvenus à coproduire un plan stratégique pour la ville de Barcelone avec ses citoyens. En 2016, nous avons inauguré le Plan d’Action Municipale sous la forme d’un processus participatif par le biais de Decidim Barcelone. Actuellement, ce plan comprend près de 7 000 propositions citoyennes. L'un des avantages de l'utilisation de cette plateforme est que vous pouvez contrôler à tout moment l'état de mise en œuvre des propositions approuvées.
Gala Pin
Hôtel de Ville de Barcelone (2015-2019)
Part of what makes Decidim so powerful is that it adds a level of abstraction to the work separating out the steps of a process and the activities associated with the process. That’s part of the information architecture, so that not only you are saying what is happening at each step but different parts of Decidim behave differently depending on when you are doing or depending on what step in the process you are in. The fact that that’s customizable really allows Decidim to be moulded to how we are doing our work and not our work to be moulded.
Francisco Tena
Pipeline to Power, working for NYC Civic Engagement Commission
Foire aux questions
What does it mean that Decidim is for free, "libre" and open source?
Decidim is a platform for citizen participation made by the people and for people. Its source code is open and can be inspected, modified, and enhanced by anyone. The Decidim software is covered by the AGPL license. That means that you can use it, modify it and redistribute derived versions of it as long as you respect the AGPL license.
What can a participant (user) of Decidim do?
Decidim makes it possible for thousands of people to organize themselves democratically by making proposals, attending public meetings, fostering decision-making discussions, deciding through different forms of voting and monitoring the implementation of decisions.
What is Decidim's trademark policy?
Decidim and the Decidim logo are registered by the Association, they cannot be used as a commercial product nor cannot be sold. If used, the credit has to be referenced to the project. You can read more about this in our Trademark policy.
Who is currently using Decidim?
It is currently used by cities and organizations worldwide. In fact, any group of people can use it, whether it is an NGO, university, trade union, cooperative, neighbourhood association, etc. Check the complete list of currently active instances.