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The Protomaps open source project is a recipient of a NLnet open source grant! This grant is part of the NGI (Next Generation Internet) initiative of the European Commission. Motivation The goals of the NGI Zero Core initiative are to develop alternatives and improvements to core internet hardware, software and protocols, in order to remove gatekeepers, choke points and surveillance capabilities on the web....

The Protomaps Project has gained several new repositories in the past year, including the serverless implementations for AWS and Cloudflare, and a new basemaps repository, which generates a full planet PMTiles archive from OpenStreetMap. A free daily build of the planet output is available on maps.protomaps.com/builds. These additional components complete the transition from an open core project into an open source one, distributed under...

One detail in the PMTiles version 3 specification is a boolean flag called clustered. Popular tools like the pmtiles CLI, tippecanoe and Planetiler always create clustered archives. PMTiles is an open specification in the public domain, so this post is to aid developers in implementing this optional feature. Clustered The term clustered comes from relational databases: the PostgreSQL manual defines that “When a table...