phaios is an open-source desktop application for photographers to develop and process black-and-white RAW images. It provides a graphical interface and darkroom-like features, supporting multiple platforms and designed for users seeking specialized monochrome photo editing.
In the Image editing space, phaios takes a focused approach. It focuses on processing and developing black-and-white RAW photographs on desktop systems. It is built as an open-source project for photographers and photo editors. phaios is open source under the GPL-3.0 license. It runs on the command line, macOS, Windows, and Linux.
sdhdez builds and maintains phaios, and the product first shipped in 2026. Development happens publicly on GitHub with 10 commits in the last 90 days. Key capabilities include RAW development, black-and-white processing, and GUI interface.
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