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.
Thanks to Decidim, in Barcelona we have managed to co-produce a strategic city plan together with the citizens. In 2016 we inaugurated the Municipal Action Plan in the form of a participatory process through Decidim Barcelona. Currently, this plan includes almost 7 thousand citizen proposals. One of the advantages of using this platform is that you can monitor at all times the state of implementation of the approved proposals.

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.

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 Decidim?
Decidim is a Free Open-Source participatory democracy platform for cities and organizations. But Decidim is more than a digital platform: it’s a common's free and open project and infrastructure involving code, documentation, design, training courses, a legal framework, collaborative interfaces, user and facilitation communities, and a common vision.
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.
How often is the platform updated?
We release a new version approximately every month. See the record of versions.