There are a number of open-source and free tools that Metabolism of Cities provides for the use of the public. These tools do not have to be used in the Sector-wide Circularity Assessment (SCA) or Urban Circularity Assessment (UCA), but are optional helpers to facilitate their processes. And of course, these tools can also be used for other assessments or projects.

Explore and find out more about each tool on the following Handbook pages:

Do you have any questions about the (use of) tools? Please get in touch with Metabolism of Cities (info[at] for assistance.