darktable
replaces Adobe Lightroom Classic
Non-destructive RAW photo workflow and developer, the closest open-source equivalent to Lightroom's develop module.
digiKam
replaces Adobe Bridge
Full photo library manager from KDE — tagging, face recognition, and cataloging for large collections.
GIMP
replaces Adobe Photoshop
Free raster image editor covering most Photoshop territory, with a steeper learning curve and its own way of doing things.
Gwenview
replaces IrfanView
KDE's fast image viewer with light editing — the closest thing to IrfanView's speed with a modern UI.
Hugin
replaces PTGui
Panorama stitcher with control-point precision — the free answer to PTGui, if you can forgive the UI.
Inkscape
replaces Adobe Illustrator
Free vector editor covering most Illustrator workflows, with native SVG at its core.
Krita
replaces Paint Tool SAI
Digital painting powerhouse from KDE that doubles as a capable image editor, especially strong for illustration and concept art.
Pinta
replaces Paint.NET
Simple, friendly image editor deliberately modeled on Paint.NET — quick edits without GIMP's learning curve.
RawTherapee
replaces Adobe Lightroom Classic
Powerful RAW developer with excellent demosaicing — a leaner, more photographic alternative to darktable.
Upscayl
replaces Topaz Gigapixel AI
One-click AI image upscaling on your own GPU — a free Topaz Gigapixel alternative.