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
Orașul 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.
We suffer under a lack of public space. It's particularly important that we reclaim these public spaces for us. Open platforms such as Decidim do exactly that. Is not only that is open source so other people can fork it, reuse it and build a process. It also has these values that we want to reflect in our society encoded in the way it's designed.

Platforma digitală Decide Meeartha a fost o oportunitate care a fost mai deschisă ca niciodată înainte de mecanismele de participare a cetățenilor la elaborarea Planului de Dezvoltare Municipală al MeThererida 2018-2021. Am avut peste 3.000 de interacţiuni între cetăţeni, inclusiv propuneri, comentarii, sugestii și sprijin pentru obținerea celui mai mare consens posibil cu privire la ce este mai bine pentru orașul nostru. Fără îndoială, platforma Decide Me·rida va continua să fie aliatul nostru pentru a transforma Meτ rida într-o societate din ce în ce mai participativă.

The process started in October 2019 at the European Commission’s DG Communication and eDemocracy unit at the Joint Research Centre, the European Commission's science and knowledge service. An analysis of the needs of the Conference and which tools fit those, lead to choosing the open source tool Decidim for its technical maturity, broad community and adaptability.

Întrebări frecvente
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.
What kind of members you accept into the Metadecidim community?
Anybody who has good faith and a correct attitude towards democratic collaboration.
What is the Social Contract?
That's how we call our Code of Democratic Guarantees and Democratic Collaboration. All members of the community must endorse the Social Contract.
How often is the platform updated?
We release a new version approximately every month. See the record of versions.