OneGeology Portal: Geological maps from geological surveys around the world in one viewer. OpenTopoMap: Free topographic map of the world from OpenStreetMap and elevation data.
| OneGeology Portal | OpenTopoMap | |
|---|---|---|
| Category | Geology, Terrain & Ocean Floor | Hiking, Ski & Outdoor Maps |
| Coverage | Worldwide | Worldwide |
| Updates | Periodically | Continuously (community edits) |
| Data source | National geological surveys | OpenStreetMap and SRTM elevation |
| Made by | OneGeology consortium | OpenTopoMap contributors |
| Price | Free | Free |
| Account | No account needed | No account needed |
| On phones | Best on a computer | Works well on phones |
| Map view | Flat map | Flat map |
| Visits from ColorfulMaps | 0 | 0 |
| Open map | Open map |
What you can do with OneGeology Portal
- Official geology from many countries
- Layer services from national surveys
- Search by country
What you can do with OpenTopoMap
- Contours and hill shading worldwide
- Paths and huts from OSM
- Free to use
Summary based on public information. Check each map's website for current features and prices.