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Compositor

Compositor is a free, open-source image editor for Mac built around the Adobe Photoshop compositing and post-processing workflow.

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Compositor is a free, open-source image editor for Mac built around the Adobe Photoshop compositing and post-processing workflow. It provides the tools needed to create a pixel-perfect final image, and because it is open source you can download the Xcode project to add, remove, or modify any feature to fit your own workflow. It is aimed at users who want a familiar Photoshop-like editing experience without the subscription cost.

Platform availability

Available on 1 of 9 platforms

  • Unraid (not listed)
  • TrueNAS (not listed)
  • Umbrel (not listed)
  • ZimaOS (not listed)
  • Proxmox (not listed)
  • Helm (not listed)
  • Mac
  • Windows (not listed)
  • Linux (not listed)

Health score?A 0-100 score computed nightly from four factors: maintained (40%: recent commits and steady activity), popular (25%: GitHub stars, log scale), easy to install (20%: platforms, install notes, setup guides, Docker image) and light to run (15%: minimum RAM, ARM support). When the source code has been checked, a fifth factor, security check (20%: automated scan for committed secrets, unsafe desktop-app settings, known-vulnerable dependencies and project hygiene; any serious finding caps it at 20), is added. Factors without data are left out and the rest are rescaled.

72/100 Good

Maintained
82last commit 0 days ago
Popular
8416,107 GitHub stars
Easy to install
251 install platform, install notes
Light to run
No data
Security check
85no serious findings, CI

Based on 4 of 5 factors.

GitHub stars
16,107
Open issues
56
Last commit
2026-10-12
Latest release
v1.4.10
License
MIT
Activity
rising

Checked yesterday - source: GitHub (robbietilton/Compositor)

Resources & Compatibility

Requirements not published yet.

First-install notes

  • Installation Download Compositor for Mac from robbietilton.com/compositor, or grab the latest release from the GitHub Releases page. It is open source, so you can also download the Xcode project to add, remove, or modify features for your workflow. source

Fetched yesterday - each note links to its source

Alternatives (9)

  • Adobe Photoshop - Adobe Photoshop is a raster graphics editor developed and published by Adobe for Windows and macOS.
  • Affinity - Professional tool combining photo editing, vector illustration, and layout features with non-destructive editing, file compatibility, AI to…
  • GIMP - GIMP(https://www.gimp.org/) is a free and open-source raster graphics editor used for image manipulation (retouching) and image editing, fr…
  • Krita - Krita(https://krita.org/en/) is a professional FREE and open source painting program.
  • PhotoGIMP - Open-source patch transforms editing interface and shortcuts to match Adobe’s design, optimizing workspace and settings for users familiar…
  • PhotoSuite - A completely free and open-source desktop image editor faithfully replicating classic Adobe Photoshop with 1:1 native PSD/PSB compatibility.
  • Photopea - Browser-based editing supports complex layers, masks, and adjustment tools, opens PSD, XCF, Sketch files, and exports in over 40 formats, a…
  • Pixelmator - Image editing app featuring nondestructive, GPU-powered tools with machine learning enhancements for editing on macOS and iOS platforms.
  • Pixlr - Online editor for fast image adjustments, design templates, AI tools, layers, quick overlays, and intricate photo enhancements for web or m…

Checked yesterday - source: AlternativeTo

Common questions

How can I install Compositor on macOS?

You can install it with Homebrew using the robbietilton-compositor cask, or download the latest release from GitHub Releases.

Can I customize Compositor's features?

Yes. It is open source, so you can download the Xcode project and add, remove, or modify features to fit your workflow.

Do layer effects use GPU acceleration?

Layer effects are rendered on the GPU and remain editable at any time.

Can I move layers between Compositor projects?

Yes. You can copy and paste whole layers and folders within a project or between projects, or drag them between projects.

Answers sourced from github.com

Community

Collected yesterday - public community threads