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
Ajuntament d’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.
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.

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.

With the implementation of Decidim in Som Energia we have generated a kinder space for participation. We released the tool in 2018, hosting the General Assembly of the Cooperative and months later we debated the Image Redesign and collaborative development of the School of Som Energia, among other participatory processes. In a few months, more than 3,500 participant people have registered, 5 participatory processes, 3 assemblies operating and more than 1,300 votes in the last General Assembly vote.

FAQs
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.
What can a participant (user) of Decidim do?
Decidim makes it possible for thousands of people to organize themselves democratically by making proposals, attending public meetings, fostering decision-making discussions, deciding through different forms of voting and monitoring the implementation of decisions.
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.
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.