This app provides access to nautical chart data and map image tiles generated by a collaborative open-source mapping project. It serves as a browser for freely usable marine navigation information.
Open Sea OpenSeaMap Browser by Mobile Geographics


10+ similar apps compared and reviewed
Whether you want more options like OpenSeaMap or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.


This app provides access to nautical chart data and map image tiles generated by a collaborative open-source mapping project. It serves as a browser for freely usable marine navigation information.






This app provides digital nautical charts and navigation tools for safe boating. It offers offline chart downloads, real-time AIS tracking, and community-shared points of interest. Plan and share your routes with ease.






This app offers offline GPS charting for marine use, allowing users to own their maps permanently. It provides advanced navigation tools, custom map creation from any image, and respects user privacy by not tracking or selling data.