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
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 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.
Almost every participatory process that has come to our table, we have been able to solve it using Decidim's business rules. As a tool, it is a very strong one. However, the part that seems strongest and most important to us is its community, both developers and those who use it for participatory processes. Coexisting with them has made us appreciate the challenges involved in implementing participatory democracy in the real world.
Alejandra González
Open Government of Mexico City
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
The Decide Mérida digital platform was an opportunity that opened as never before the mechanisms of citizen participation for the elaboration of the Municipal Development Plan of Mérida 2018-2021. We had more than 3,000 citizen interactions including proposals, comments, suggestions and support that achieving the highest consensus possible about what is best for our city. Undoubtedly, the Decide Mérida platform will continue to be our ally in making Mérida an increasingly participative society.
Renán A. Barrera Concha
Municipal President of Mérida Yucatán, Mexico. City Council of Mérida Yucatán, Mexico
FAQs
What can a Decidim administrator do?
Easily configure participatory processes Do you want to make a strategic plan? Or discuss new regulations? Or discuss a new square or a public building to achieve the common good? Thanks to Decidim you will be able to configure participation spaces (initiatives, assemblies, processes or consultations) and enrich them through the multiple available components (face-to-face meetings, surveys, proposals, voting, follow-up of results, comments and many more).
How can I become a member of the Decidim Association?
Now the people involved in the project can be partners. Here we explain in detail how you have to do it
What is the Metadecidim community?
Metadecidim is the community of Decidim that collaborates in the design of the platform and the construction of the Decidim project. We meet regularly through the Community Meetings, for issues related to the technological aspects of the platform and the Labs witc are Research oriented meetings. Our annual conference is Decidim Fest. Go to meta.decidim.org to follow the calls closely and if you want to join the community. We'd love to ;-)
What is the Decidim Association?
The "Asociacion de Software Libre Decidim" (The Decidim Free Software Association) is a democratic association for the governance of the Decidim community. It was founded on February 16, 2019 in an extraordinary assembly of the community, with the approval of the organization statutes.