digiKam
Open SourcedigiKam is a powerful, free, and open-source professional photo management application designed to handle large collections of digital photographs. It provides a comprehensive set of tools for organizing, tagging, editing, and publishing high-quality images across various platforms.
Key Features
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Free and open-source with no recurring costs.
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Powerful and flexible image organization tools.
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Excellent support for a wide range of RAW formats.