Verdict: No
No. DxO publishes PhotoLab for Windows and macOS only, with no Linux build and no browser version. The free Linux raw developers are good, but nothing matches DxO's lens corrections and DeepPRIME.
DxO's system requirements for PhotoLab cover Windows 11 and recent macOS releases. Linux is not listed, there is no web version, and the newer AI features depend on specific graphics cards under those two systems.
The honest position is that DxO is hard to replace exactly. Its noise reduction and its per-lens optical corrections come from DxO's own laboratory measurements of thousands of camera and lens combinations, and that data is not available to free software. If you bought PhotoLab specifically to rescue high-ISO photos, expect a step down.
For everything else, darktable is the closest fit. It is free, it develops raw files without changing the original, it has a catalogue, and its lens corrections use the open Lensfun database, which covers most common lenses even if it is less exact than DxO's. RawTherapee is the other option and gives you more manual control over noise and detail.
Your photos come across fine because raw files are raw files. Your edits do not. DxO stores adjustments in .dop sidecar files that no Linux program reads, so export your finished images as JPEG or TIFF while you still have Windows.
Free raw developer with a catalogue, lens corrections from the open Lensfun database, and edits that never change the original file.
Your files: Opens the same raw files. Cannot read DxO .dop sidecar files, so export finished images before you switch.
Free, with very fine manual control over noise reduction, sharpening and colour. Slower to learn and it does not organise your library.
Your files: Opens the same raw, JPEG and TIFF files. No .dop support.
For the retouching you did after developing, such as removing objects or fixing skin.
Your files: Works on exported JPEG and TIFF files rather than raw.
One stubborn program doesn't have to decide the whole question. You can keep Windows on the same PC and restart into it only when you need DxO PhotoLab. Everything else you do can move.
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