Decidim
The free participation platform cities and cooperatives run themselves: proposals, assemblies, participatory budgeting, consultations. Born from Barcelona's city platform, stewarded by the Decidim Free Software Association.
Open source (AGPL-3.0), used by hundreds of cities, cooperatives, and organizations. Listed in Metagov's gallery for framing, eliciting, deliberating, deciding.
Neighborhood use: the horizon a neighborhood process can grow toward: when a block's deliberations mature into standing assemblies with budgets, Decidim is the city-grade commons they can move into without leaving open source.
Remix pattern: a small-scale proposals-and-assemblies flow: neighbors post proposals, endorse each other's, and the assembly page shows what advanced, a garden-plot version of the Decidim pattern.
Connects: a whole-city participation OS that neighborhood processes can plug into as they grow. Proposals travel from block assemblies up to formal city process.
Details
- maker: Decidim Free Software Association
- stages: framing, eliciting, deliberating, deciding
- license: AGPL-3.0
- repo url: https://github.com/decidim/decidim
- image url: https://texakzqqenzpxawktbgx.supabase.co/storage/v1/object/public/studio-library/tool-screenshots/delib-decidim-2026-08.jpg
- remix idea: A small proposals-and-assemblies flow for one neighborhood.
- practice kind: tool
- metagov listed: true
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Build prompt
A "what we heard" report page
Build prompt: after the listening, a report page in the Talk to the City pattern: themes with real quotes, minority views kept visible, a…
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Build prompt
A listening wall for one neighborhood question
Build prompt: a Pol.is-style listening wall for one question, two weeks open, QR flyer on every corner, with a printable consensus summary…
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Build prompt
Build: Participatory Budgeting for a Very Small Budget
A starter build: run real participatory budgeting on a block association's actual money — propose, develop, vote, do — sized so the whole…
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Tool
CivicOS (BLOOM Project)
Infrastructure for public problem-solving: an Open Poll maps the opinion landscape, small-group community conversations work through…
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Tool
Cobudget
Collaborative budgeting for real shared money: members propose 'buckets,' everyone allocates their share, projects get funded in the open.…
Contributed by Decidim Free Software Association (grown from Barcelona City Council) · decidim.org
Original source: https://decidim.org
See something to fix or add? Suggest an edit on GitHub — the commons lives in git too, and its history is the changelog.
deliberationtoolopen-sourceframingelicitingdeliberatingdecidingparticipatory-budgeting