For and from citymakers around the globe

use our platform to explore sustainable city making.

That's a wrap on 2025!

700+ citymakers, 440+ cities, one shared mission.

Closing the Digital Divide

An interview with citizen participation expert Adrià Duarte (UCLG), exploring how cities can use digital tools to strengthen local democracy, and put human rights at the centre of digital transformation.

e-sabha app

Connecting Communities with Local Authorities and Government Agencies on a Single Platform.

C6 Finland - Finnish Alliance model

A bold new experiment in multilevel collaboration

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use (urban sustainability exchange) is a knowledge exchange platform dedicated to sustainable city making. use connects citymakers and encourages the exchange of ideas and experiences to effect positive sustainable change.

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441 cities online.

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Case studies

564 case studies online. See all
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Quinto Centenario Cycle Avenue
Bogotá, Colombia

Quinto Centenario Cycle Avenue

The C40 Cities Finance Facility is supporting a cycling transformation in the city of Bogotá by providing technical assistance to the city administration to help fund new high-quality cycling infrastructure.
Urban Transport Plan for the Ile-de-France Region
Ile de France, France

Urban Transport Plan for the Ile-de-France Region

The Plan aims to find a better balance between transportation and environmental issues in the metropolitan region of Paris Ile-de-France
RogLab
Ljubljana, Slovenia

RogLab

Promoting the innovative use of manufacturing technologies.
Leeds 2023
Leeds, United Kingdom

Leeds 2023

Connecting the city through culture and creativity
Separation at Source Programme (S@S) in the City of Johannesburg
Johannesburg, South Africa

Separation at Source Programme (S@S) in the City of Johannesburg

The S@S programme aims to reduce waste to landfills, establish a recycling economy with citizen support and participation.
Tebet Eco Park
Jakarta, Indonesia

Tebet Eco Park

An inclusive green space with creative, educational, and interactive areas, blending ecological and recreational functions.

Community

710 citymakers online. See all
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Amsterdam, Netherlands

Frans-Anton Vermast

Individual | Strategy Advisor & International Smart City Ambassador
Medellín, Colombia

Andrés Fernandez

Individual | Public Relationship
Seoul , South Korea

char yang

Individual | student
Lisa Buchmann
Berlin, Germany

Lisa Buchmann

Individual | Research assistant
Lomé, Togo

Johnson Afogbe

Individual | Consultants
Achim Geissinger
Berlin, Germany

Achim Geissinger

Individual | editor