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zyGrib - GRIB File Viewer
Ugrib - Our freeware application Ugrib allows instant and fully customizable access to global weather data.
GoldenSoftware Surfer - GoldenSoftware Surfer is full-function weather forecasting software that offers 2D or 3D mapping, modeling, and analysis mostly used by scientists or engineers.
Open Nautical Charts - Open Nautical Charts offers free seacharts for everybody.
Ventusky - Real-time weather mapping