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Openseamap alternatives & similar sites

OpenSeaMap: Startseite — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Maps and Navigation →

DomainMatchTitleCountry/LangCategoryAI filesContactAI-protection
here.com 100* match HERE Technologies | The world's #1 Location Platform & Mapping Technology en Maps and Navigation none
mapbox.com 90* match Mapbox | Maps, Navigation, Search, and Data en Maps and NavigationWebflow none
openstreetmap.org 87* match OpenStreetMap en Maps and Navigation none
opentopomap.org 58* match OpenTopoMap - Topographische Karten aus OpenStreetMap de Maps and Navigation robots none
carto.com 16* match CARTO - The Agentic GIS Platform en Artificial Intelligence none
openweathermap.org 15* match OpenWeather APIs for Weather, Energy, and Environment en Weather robotsllms none
wikimediafoundation.org 14* match Home – Wikimedia Foundation en Non Profit OrganizationsWordPress robots none
nasa.gov 8* match NASA en Space and AstronomyWordPress none
osmfoundation.org 7* match OpenStreetMap Foundation en Maps and Navigation robots none
waze.com 7* match Driving directions, live traffic & road conditions updates - Waze en Maps and Navigation none
2gis.com 7* match Map of the UAE cities: detailed maps with search by address — 2GIS en Maps and Navigation robots email none
what3words.com 7* match what3words /// The simplest way to talk about location en Maps and Navigation robots none
osm.org 7* match OpenStreetMap en Maps and Navigation none
openmaptiles.org 7* match World maps you can self-host - powered by free OpenStreetMap vector tiles and open-source software – OpenMapTiles en Maps and Navigation robots none
mapsmarker.com 7* match the #1 mapping plugin for WordPress › Maps Marker Pro en Maps and NavigationWordPress none
qgis.org 7* match Spatial without Compromise · QGIS en Maps and Navigation robots partial · 3
stadiamaps.com 7* match Location APIs: Maps, Geocoding, Navigation | Stadia Maps en Maps and Navigation email none
maploco.com 7* match MapLoco! - Web Visitor Map - Visited States Map en Maps and Navigation robots none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

  • shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
  • same category whether they sit in the same business / industry category.
  • content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.