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.
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.

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.

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.

FAQs
How often is the platform updated?
We release a new version approximately every month. See the record of versions.
What are the differences with Consul Project / Decide Madrid?
There are many differences: features, flexibility, architecture, modularity, etc. We have published a post to try to answer this question.
What do I need to install Decidim?
Installing Decidim is easy but you need some knowledge and technical requirements. See the documentation for installing Decidim.
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 ;-)