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Compositor vs GIMP: catalog facts
Compositor	GIMP
Free Completely free and open source.	Free Free software under the GNU GPL; there is no paid edition and no subscription.
macOS	Windows, macOS, Linux
Photoshop-like workflow for compositing and retouching Free with no subscription	Full layer, mask, selection and path editing for photo retouching and composites Runs on Linux, macOS and Windows from one project
macOS only Younger and less complete than Photoshop or GIMP	The interface follows its own conventions, so Photoshop habits do not transfer cleanly CMYK support for print work is still limited compared with commercial editors
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 20, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.