Apps to RAW Photo Processing

UFRaw (Unidentified Flying Raw) is a powerful and flexible open-source application designed for processing and manipulating raw image files from digital cameras. It provides a comprehensive suite of tools for non-destructive editing, batch processing, and conversion.

LightZone is a potent, open-source digital photo editor specifically designed for photographers. It offers unique tools for tone and color adjustments, non-destructive editing, and robust RAW file processing, making it a sophisticated alternative to mainstream photo editing software.

Nomacs is a fast and lightweight free, open-source image viewer offering a wide array of features for diverse image formats, including RAW and PSD. It provides essential editing tools, batch processing capabilities, and extensibility via plugins, making it more than just a simple viewer.

F-Spot is a discontiued, but capable photo management application specifically designed for the GNOME desktop environment. It offers a range of features for organizing, editing, and sharing personal photo collections, supporting various image formats.

ExifTool is a robust, free, and open-source meta-information toolkit for wide range of file formats including image, audio, video, and PDF. It allows users to read, write, and edit extensive metadata, making it an essential tool for photographers, archivists, and anyone managing digital files.

Darktable is a powerful, open-source and free photography workflow application and raw developer, offering professional-grade tools for managing and editing digital negatives. It's a non-destructive editor designed by photographers for photographers.

digiKam 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.

Krita is a powerful, free, and open-source painting program designed for professional artists and illustrators. It offers a comprehensive suite of tools for digital painting, sketching, image editing, and animation, making it a versatile solution for various creative workflows.

Photivo is a free and open-source photo processor designed for advanced users. It supports a wide range of RAW and bitmap file formats, offering sophisticated tools for image processing, editing, and conversion.