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
European Commission
The digital platform was launched on 19 April 2021 and was open to contributions until 9 of May 2022. During this...
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
Avec la mise en œuvre de Decidim à Som Energia, nous avons créé un espace de participation plus chaleureux. Nous avons déployé l'outil en 2018, pour accueillir l'Assemblée Générale de la coopérative et quelques mois plus tard, nous avons débattu de la refonte graphique du développement collaboratif de l'école de Som Energia, entre autres processus participatifs. En quelques mois, plus de 3 500 participants se sont inscrits, 5 processus participatifs et 3 assemblées furent en place et plus de 1 300 participants votèrent lors de la dernière Assemblée Générale.
Yaiza Blanch
Som Énergie
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 do I need to install Decidim?
Installing Decidim is easy but you need some knowledge and technical requirements. See the documentation for installing Decidim.
Do you have a Demo? I want to use Decidim now, without installing it, to see how it works.
Yes, we have an online demo.
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 is Decidim?
Decidim is a Free Open-Source participatory democracy platform for cities and organizations. But Decidim is more than a digital platform: it’s a common's free and open project and infrastructure involving code, documentation, design, training courses, a legal framework, collaborative interfaces, user and facilitation communities, and a common vision.