Open-Source Lightroom Alternatives (2026, Free)
Identifying Adobe Lightroom · Mark source
People look for a Lightroom alternative when they want an OSI-style license, a local RAW catalog, or a developer they can run offline. This hub lists tools we verified on 2026-10-21. Lightroom is named only to identify that product class.
- darktable — Open-source photography workflow and RAW developer (lighttable + darkroom).
- RawTherapee — Cross-platform GPL RAW photo processor with deep demosaic controls.
- digiKam — KDE photo manager for import, library, edit, and share of photos and RAW files.
How we pick
- Open-source license files we could open on an official host.
- RAW develop or photo-library jobs (not a pixel editor or a generator).
- Documented platforms from the project’s own README or site.
- Honest job split: catalog+develop vs demosaic control vs photo library.
Comparison
| Name | License | Price | Platforms | Runs locally | Job | Last release |
|---|---|---|---|---|---|---|
| darktable | GPL-3.0 | free | Linux, Windows, macOS | Yes | See page | release-5.6.2 |
| RawTherapee | GPL-3.0 | free | Windows, macOS, Linux | Yes | See page | 5.13 |
| digiKam | GPL-2.0-or-later | free | Linux, Windows, macOS | Yes | See page | v9.1.0 |
Why these three
The 2026-10-21 check covers darktable, RawTherapee, and digiKam.
darktable is an open-source photography workflow and RAW developer. Official hosts: darktable.org and darktable-org/darktable. GPL-3.0 (LICENSE). 13,300 stars / 1,484 forks, last push 2026-10-21T00:49:10Z, latest release release-5.6.2 (2026-10-04).
RawTherapee is a cross-platform RAW processor. Official hosts: rawtherapee.com and RawTherapee/RawTherapee. GPL-3.0 (LICENSE on dev). 4,242 stars / 427 forks, last push 2026-10-20T12:01:53Z, latest release 5.13 (2026-07-26).
digiKam is a photo manager. Canonical git is invent.kde.org/graphics/digikam (32 GitLab stars, last activity 2026-10-21, tag v9.1.0). The GitHub KDE/digikam mirror is archived (last push 2019-12-21) — we do not treat that star count as current activity.
Pixel editors stay on Photoshop alternatives: GIMP, Krita, PhotoCraft. The high-traffic comparison is PhotoCraft vs GIMP. Direct commercial RAW comparison: darktable vs Lightroom. Install outline: How to install PhotoCraft.
Sourced snapshot (2026-10-21)
| Field | darktable | RawTherapee | digiKam |
|---|---|---|---|
| License | GPL-3.0 (LICENSE) |
GPL-3.0 (LICENSE) |
GPL family on invent.kde.org |
| Stars (host we opened) | 13,300 (GitHub) | 4,242 (GitHub) | 32 (GitLab canonical) |
| Last release in this check | 5.6.2 (2026-10-04) | 5.13 (2026-07-26) | v9.1.0 (2026-06-06) |
| Job | Catalog + non-destructive develop | Demosaic / RAW develop | Photo library + edit/share |
| Maturity | Long-standing | Long-standing | Long-standing (canonical git live) |
| Quality vs Lightroom | Not independently tested | Not independently tested | Not independently tested |
Who should switch
- Need a lighttable plus darkroom this week: darktable 5.6.2 from darktable.org. Versus the commercial catalog: darktable vs Lightroom.
- Need demosaic and develop controls, not a catalog: RawTherapee 5.13. Head-to-head: darktable vs RawTherapee.
- Need a photo library (import, tags, albums): digiKam v9.1.0 from invent.kde.org / digikam.org.
- Need a pixel editor, not a RAW catalog: Photoshop alternatives — PhotoCraft vs GIMP.
- Need painting: Krita.
Limitations we actually sourced
darktable.org: original files are never modified; GPU acceleration is documented as optional. RawTherapee’s README says it targets enthusiasts through semi-professionals and may lack DAM, printing, and upload peripherals. digiKam’s GitHub mirror is dead; use invent.kde.org. We did not test color-managed print, tethered capture, or catalog migration from a Lightroom catalog.
Related
Listed options
darktable
Open-source photography workflow and RAW developer (lighttable + darkroom).
RawTherapee
Cross-platform GPL RAW photo processor with deep demosaic controls.
digiKam
KDE photo manager for import, library, edit, and share of photos and RAW files.
FAQ
What is the best free Adobe Lightroom alternative right now?
Among options we sourced on 2026-10-21, darktable is the catalog-plus-develop app (GPL-3.0, release 5.6.2, 13,300 GitHub stars). RawTherapee is the demosaic-focused processor (GPL-3.0, 5.13, 4,242 stars). digiKam is the photo library (v9.1.0 on invent.kde.org; the GitHub KDE/digikam mirror is archived). “Best” depends on whether you need a lighttable, raw-develop depth, or a DAM. We have no bake-off.
Is darktable a drop-in Lightroom replacement?
No sourced document we opened claims feature parity. darktable.org describes a virtual lighttable and darkroom that develops RAW files non-destructively. Catalog, tethering, cloud sync, and preset ecosystems are not independently tested here.
Should I pick GIMP or PhotoCraft instead?
Those are pixel editors, not RAW catalogs. See Photoshop alternatives, PhotoCraft vs GIMP, and How to install PhotoCraft if that is the job.
Why is digiKam’s GitHub star count unused?
GitHub KDE/digikam is archived (last push 2019-12-21). Canonical git is invent.kde.org/graphics/digikam (32 GitLab stars, last activity 2026-10-21, tag v9.1.0).
Sources & verification
- https://github.com/darktable-org/darktable
- https://www.darktable.org/
- https://github.com/RawTherapee/RawTherapee
- https://rawtherapee.com/
- https://invent.kde.org/graphics/digikam
- https://commons.wikimedia.org/wiki/File:Adobe_Lightroom_CC_2026_icon.svg
License notes are not legal advice. Read the original LICENSE. Trademark & disclaimer.