Rembrandt - Free local Lightroom alternative with on-device AI

Show HN: Free open source Adobe Lightroom alternative, completely local with AI

Rembrandt is a free, open-source photo editor for macOS, Windows, and Linux that eliminates subscriptions, accounts, and tracking. It handles RAW from 1,000+ cameras, AI masks, Super Resolution, and natural-language edits like "golden hour, shadows +25"—all processed locally on your GPU. You can self-host it to edit photos in any browser, with edits saved as standard XMP. No cloud required, no terms-of-service surprises. Download it, build it, or run the server on your own machine and take back control of your photo workflow.