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CoMMA (Collaborative Multi Media Atlas) is a platform for the co-production of digital atlases.

The acronym  Co.M.M.A. stands for Collaborative Multi Media Atlas, but also COMunity Mapping Action. It alludes both at the development of an innovative digital tool and that of a social practice. Our objective is to develop a collaborative platform able to allow wide, multidisciplinary and non-expert participation to the collective representation of urban territories.  Research in this direction has always played a key role for Tesserae, as part of its engagement to develop tools to understand the complexity of factors influencing territories and to involve local communities in their transformation. The development process of CoMMa is ongoing since the early 2000 and has been characterised  by several gradual steps of design and testing.

It started in 2005 with the early experiments of a bottom-up atlas made in a pre-google maps era with the Florentine Cartografia Resistente collective. This was the first test of a combination of Wiki, PGIS and media repositories aimed at community use.

The successive step has been the development of the Urban Reconnaissance platform, as a way to develop the complex taxonomy needed to analyse the urban dimension and organise its representation.

The next phase started in 2015, when Tesserae was involved in the Erasmus+ project EULER. The mission was to support skills and competences developed in informal initiatives and bottom up projects, to reinforce and disseminate the knowledge that is produced through voluntary engagement and activism and consolidate it as a resource for local communities. The neighbourhood we chose for such implementation was Südliche Friedrichstadt in Berlin, for its great variety of social programmes, local initiatives and organisations present in the area as a result of a complex composition of public policies, economic opportunities and social demands influencing local development. The concept of  Solidarity Curriculum  was developed and conceived as a dynamic archive, a territorial atlas, as well as a collaborative baseline study depicting – through collaborative mapping and other processes-  the existing resources of a community while envisioning their entrepreneurial and solidarity capacity for future initiatives. This project provided the baseline for designing a prototype of online atlas able to collect and display such content.

The successive development started in 2018 through the  COMENSI Erasmus+ project, which gave a concrete chance to experiment the use of digital collaborative platforms (Neighbourhood Atlas) as tools for community engagement and knowledge exchange and to experiment the toolset and the platform in the activities of local neighbourhood hubs during five citizens labs. Each partner managed the collaborative creation of a Community Atlas for each involved neighbourhood. Aside from experimenting the use in different context, this project is delivering also a handbook providing methodological hints for the use of digital platforms in running community programs.

Tesserae is now actively trying to bring CoMMA forward to a last step of finalisation, upgrading the existing prototype of Atlas into a flexible integrated platform  connecting multiple community projects and defining a common format.





Südliche Friedrichstadt,  Berlin

Il Capo, Palermo

Ajuda, Lisbon

Mildmay, London

Savsko Naselje, Ljubliana


CoMMa neighbourhood atlas