Sites using OpenSeaMap
Open source nautical chart project providing sea marks, harbours and maritime map tiles built on OpenStreetMap data.
Get told when a new site ships with OpenSeaMap.
Stackdar watches every launch we detect and sends you the ones using OpenSeaMap, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workFound via: StackScope Discovery (Indie) 17 · StackScope Wider Web 9
OpenSeaMap has been detected on 26 launches we've crawled. Most recent detection: RegattaLens — живые трансляции парусных регат, 2 days ago.
It's most commonly paired with HSTS, OpenStreetMap, and HTTP/3.
Domain endings using OpenSeaMap
26 sites
- .app 38.46%
- .com 30.77%
- .eu 7.69%
- .au 3.85%
- .co 3.85%
- .fr 3.85%
- .net 3.85%
- .pro 3.85%
- .xyz 3.85%
Share of new sites using OpenSeaMap
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded parts of the chart are measured against a different set of sites.
Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: on 10 September 2026 we improved our infrastructure so we can index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from that date. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
Maps leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Google Maps
|
4.19% | 83.61% |
| #2 | – |
Leaflet
|
0.38% | 7.51% |
| #3 | – |
OpenStreetMap
|
0.28% | 5.58% |
| #4 | – |
Mapbox
|
0.07% | 1.47% |
| #5 | ▼3 |
CARTO
|
0.05% | 0.93% |
| … | ||||
| #55 | ▼12 |
OpenSeaMap
Current page
|
<0.01% | 0.01% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Maps tool.Among September launches it ranked #61 in Maps, down from #49 in August. All 224 in Maps →
Often used with
| Tool | Sites |
|---|---|
| HSTS | 21 |
|
OpenStreetMap
|
18 |
| HTTP/3 | 14 |
Vite
|
12 |
Cloudflare DNS
|
10 |
Tools most often detected on the same sites as OpenSeaMap.
Recent launches we can show
17 of the 26 sites using OpenSeaMap are product launches we list individually. The other 9 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
Naviger Route Planner
Polaris Fusion™ — Every operation needs a North Star
Nethunex — Maritime Operations Platform
Pali Fieldbook — Oʻahu field guide & live conditions
VDR & AIS Reconstruction Software · Reconstruct the Incident · Stingray
Jura Log — a modern logbook you’ll actually keep
Week to Regatta - тренажёр парусного спорта
Tides & Tails — Inshore Saltwater Fishing Hub
Koybul — Denizde yerini bul
WaterPilot — Digitaal navigatieplatform
Acuity
Crypto
Showing the most recent 12 of 17.
The StackScope API serves all 26 sites using OpenSeaMap, filterable and exportable, from £15 a month.