Observable: Data notebooks and dashboards with D3 and Plot maps. OpenLayers: Full-featured open-source library for web GIS applications.
| Observable | OpenLayers | |
|---|---|---|
| Category | Geospatial Data Visualization | Map Libraries & SDKs |
| Pricing model | Freemium | Open source |
| Starts at | See website | Free |
| Free tier | Free for public notebooks | — |
| Open source | No | Yes |
| Software licence | — | BSD-2-Clause |
| API | — | — |
| Platforms | Web, JavaScript | JavaScript |
| Made by | — | — |
| Commercial use | Check terms | Allowed |
| Export / print images | Check terms | Allowed |
| Offline / caching | Check terms | Allowed |
| Visits from MapTools | 2 | 2 |
| Visit | Visit |
Observable features
- Reactive notebooks
- Observable Plot geo marks
- D3 projections
- Data apps framework
OpenLayers features
- Any projection
- WMS, WFS, WMTS support
- Vector tiles
- Drawing and editing interactions
Summary based on public information. Check each provider's current pricing and terms.