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OpenPlotter - Tool kit to be used as navigational aid in small and medium-length boats.
OpenSeaMap - OpenSeaMap - The free nautical chart
Anchorages.co - Always choose the safest anchorages, marinas and boatyards: read sailors’ reviews, check weather conditions, and join a group for local news.
zyGrib - GRIB File Viewer
UnderSee Explorer - Online Services
Ugrib - Our freeware application Ugrib allows instant and fully customizable access to global weather data.