Sites using OpenSeaMap
Open source nautical chart project providing sea marks, harbours and maritime map tiles built on OpenStreetMap data.
Found via: StackScope Discovery (Indie) 5 · StackScope Wider Web 4
OpenSeaMap has been detected on 9 launches since first appearing in July 2026. Most recent detection: Acuity, today.
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 part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
Maps leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Google Maps
|
3.99% | 82.25% |
| #2 | ▲2 |
Leaflet
|
0.37% | 7.68% |
| #3 | ▼1 |
OpenStreetMap
|
0.28% | 5.86% |
| #4 | ▼1 |
Mapbox
|
0.10% | 1.96% |
| #5 | – |
CARTO
|
0.07% | 1.39% |
| … | ||||
| #48 |
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. All 134 in Maps →
Recent launches we can show
5 of the 9 sites using OpenSeaMap are product launches we list individually. The other 4 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
Shipwreck Atlas — Discover Historic Wrecks
Gypsea — Social Boating Done Right
Social
Regattr - Live Regatta Tracking & Race Management
JetRider | Australian PWC Mission Planning for Jet Ski Riders
The StackScope API serves all 9 sites using OpenSeaMap, filterable and exportable, from £15 a month.