D3 (d3-geo): Map projections and SVG maps for custom data graphics. Protomaps: Self-host an entire world basemap as a single PMTiles file.
| D3 (d3-geo) | Protomaps | |
|---|---|---|
| Category | Map Libraries & SDKs | Basemaps & Map Tiles |
| Pricing model | Open source | Open source |
| Starts at | Free | Free |
| Free tier | — | — |
| Open source | Yes | Yes |
| Software licence | ISC | BSD-3-Clause (code); ODbL (OSM data) |
| API | — | — |
| Platforms | JavaScript | Web, JavaScript, Command line |
| Made by | — | — |
| Commercial use | Allowed | Allowed |
| Export / print images | Allowed | Allowed |
| Offline / caching | Allowed | Allowed |
| Visits from MapTools | 1 | 9 |
| Visit | Visit |
D3 (d3-geo) features
- Many map projections
- SVG and canvas rendering
- TopoJSON support
- Full design control
Protomaps features
- PMTiles single-file tile archives
- Daily world basemap builds from OpenStreetMap
- Serve from S3, R2 or any static host
- Open basemap styles for MapLibre
When you host the tiles yourself, only the OpenStreetMap attribution and ODbL terms apply.
Protomaps alternativesSummary based on public information. Check each provider's current pricing and terms.