



The best free alternative to OpenCPN is zyGrib, which is also Open Source. If that doesn't suit you, our users have ranked five alternatives to OpenCPN and five of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to OpenCPN are Open Nautical Charts, OpenSeaMap, Anchorages: The Cruising Guide and Navionics Boating.




OpenNauticalChart offers free seacharts for everybody. This charts are usable (offline) with several ship-plotters and Navigation-equipement on board.

OpenSeaMap's goal is to add nautical and tourism information a sailor could be interested in to OSM (OpenStreetMap) and to present it in a pleasing way.




The Anchorages app curate extraordinary anchoring spots from secluded coves to bustling marinas, connecting sailors with the perfect place to drop anchor. Our community-driven platform offers detailed satellite charts, real-time conditions, and insider tips from other sailors.



Get up-to-date, detailed charts you can use offline plus a boatload of features on your mobile device, so they’re on hand wherever you go. The Boating app is a must-have for cruising, fishing, sailing, diving and all your activities on the water.



