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Redlamp for Mac

Native RAW photo editor for Mac, iPad, and iPhone with a familiar Lightroom-style workflow.

By pdcgomes. Free and open source, MPL-2.0 licence.

Get it with OpenDMG View source on GitHub

Redlamp at a glance

Version
0.2.8-prealpha
Released
10 October 2026
Download size
18 MB
Works on
Apple silicon and Intel
Licence
MPL-2.0
Category
Graphics and Design
Developer
pdcgomes
GitHub stars
211

About Redlamp

A native, open-source RAW photo editor for Mac, iPad and iPhone that feels immediately familiar to Lightroom users.

Screenshots

Redlamp screenshot 1Redlamp screenshot 2Redlamp screenshot 3Redlamp screenshot 4

How to install Redlamp on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Redlamp and press Get. OpenDMG downloads version 0.2.8-prealpha from pdcgomes's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Redlamp show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: Redlamp-0.2.8-prealpha.dmg (18 MB).

What is new in Redlamp 0.2.8-prealpha

Highlights:

- **Redlamp Reproduction**: a Base Look with no tone curve, for copying artwork and documents. Once the exposure is anchored to the camera, a grey scale's patches render at their own lightness ([#360](https://github.com/pdcgomes/redlamp/issues/360)). **Calibrate from Target** sets the anchor from a click on a target's grey patch, for the camera or for one photo ([#359](https://github.com/pdcgomes/redlamp/issues/359)).
- **The histogram's readout**: with the pointer over the photo, the line under the histogram shows the R, G and B percentages or L\*a\*b\*, and in stops under Redlamp Reproduction ([#319](https://github.com/pdcgomes/redlamp/issues/319)).
- **The photo takes the panels' room**: hiding the side panels with Tab, F7 or F8 fits the photo to the space they leave, rendered again at its new size ([#358](https://github.com/pdcgomes/redlamp/issues/358)).
- **Fixes**: a mask chosen by its pin no longer keeps its overlay once another mask is selected ([#364](https://github.com/pdcgomes/redlamp/issues/364)); H and Show Spots hide the Healing tool's spots, so a pick's fill can be judged with nothing over it ([#336](https://github.com/pdcgomes/redlamp/issues/336)); and each Color Grading wheel's Hue and Saturation values keep apart, so Hue 30 and Saturation 10 no longer read "30S 10".
…

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