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ORCA is a commercial MATLAB tool developed by Deltares that integrates the main aspects of analyzing metocean data. It  handles data validation, determination of mean climates, extreme value analysis, sea state analysis and persistance statistics. 

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OpenDA is a set of tools to quickly implement data-assimilation and calibration for arbitrary numerical models. OpenDA wants to stimulate the use of data-assimilation and calibration by lowering the implementation costs and enhancing the exchange of software among researchers and end-users."