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

Ajuntament d’Helsinki
We evaluated seven different kinds of participatory budgeting options to find the right platform to support...
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.
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.

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.

La plataforma digital Decide Mèrida va ser una oportunitat que va obrir com mai els mecanismes de participació ciutadana per a l'elaboració del Pla Municipal de Desenvolupament de Mèrida 2018-2021. Vam tenir més de 3 mil interaccions ciutadanes entre propostes, comentaris, suggeriments i suports que van donar lloc al major consens possible sobre què és el millor per a la nostra ciutat. Sens dubte, la plataforma Decide Mèrida continuarà sent la nostra aliada per a fer de Mèrida una societat cada dia més participativa.

FAQs
We want to make a formal collaboration agreement. Are there any templates we can use?
Yes, we have templates to formalize collaboration agreements. Please contact us.
I have ideas for new improvement features. I want to have a better understanding of the project. What can I do?
You can collaborate in multiple ways. One of them is through the Metadecidim community. If you want to propose new features, go here. If you have detected errors and want to notify them, go to this process. If you want to actively participate in the Metadecidim community, you can attend Community Meetings. Register as a participant of the community and participate with us. If your thing is the code, come to Github. If you are a researcher, you might be interested in coming to the LAB Metadecidim Seminars.
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 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).