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protomaps

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A free and open source map of the world, deployed as a single static file.

Funding Links: https://github.com/sponsors/protomaps

GitHub Sponsors Profile

Protomaps is a full-stack mapping system that's an alternative to proprietary APIs like Google Maps and Mapbox.
The major difference between Protomaps and every other mapping stack is that it is designed to be trivially self-hostable. The entire planet of vector map tiles fits in a single ~100 GB file that can be served directly from S3 to web browsers.
Protomaps is built on top of data sources such as OpenStreetMap and Natural Earth. I maintain a free service for accessing minute-level OSM in .osm.pbf at Protomaps Downloads.
I also maintain a hosted version of the Protomaps basemap on Cloudflare, free for non-commercial use. You can sign up for an API key here. This is useful if you don't want to maintain a copy of a part of the world on your own storage. Commercial use of this API requires becoming a Sponsor, which helps me pay for the infrastructure costs. However, the Protomaps business model is explicitly not SaaS; that would change the incentive structure, and distract the focus from making the map as simple to deploy as possible.
You can read more at the Protomaps FAQ.

Featured Works

protomaps/basemaps

Basemap PMTiles generation and cartographic styles for OpenStreetMap data and more

Language: Java - Stars: 383
protomaps/PMTiles

Cloud-optimized + compressed single-file tile archives for vector and raster maps

Language: TypeScript - Stars: 2111
protomaps/protomaps-leaflet

Lightweight vector map rendering + labeling and symbology for Leaflet

Language: TypeScript - Stars: 767
protomaps/go-pmtiles

Single-file executable tool for working with PMTiles archives

Language: Go - Stars: 384
protomaps/docs

Technical documentation for the Protomaps system

Language: Vue - Stars: 35

Sponsors

Active Sponsors
Past Sponsors

Sponsor Breakdown