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
Code for Japan
Decidim provides customize-friendly architecture so that we can adapt it to our domestic situation.
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.
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.
Renán A. Barrera Concha
President Municipal de Mèrida Yucatán, Mèxic. Ajuntament de Mérida Yucatán, Mèxic
Gràcies a Decidim, hem aconseguit a Barcelona co-produir un pla estratègic de ciutat conjuntament amb la ciutadania. En el 2016 inaugurem el Pla d'Acció Municipal en forma de procés participatiu a través de Decidim Barcelona. Actualment aquest pla recull gairebé 7 mil propostes ciutadanes. Una dels avantatges d'utilitzar aquesta plataforma és que pots seguir en tot moment l'estat d'implementació de les propostes acceptades.
Gala Pin
Ajuntament de Barcelona (2015-2019)
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.
Kasia Odrozek
Mozilla Foundation
FAQs
I have many doubts, of all kinds...where can I ask them or solve them?
The best way to solve your doubts quickly is through the Metadecidim community. Enter now in the process Support Forum and see if your question exists or if it has been answered and otherwise enter to ask questions. If you can't resolve your problem in this space, maybe it's time to contact us through the contact form.
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 kind of members you accept into the Metadecidim community?
Anybody who has good faith and a correct attitude towards democratic collaboration.
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.