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chaiNNer vs nip4: catalog facts
chaiNNer	nip4
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the GPL-2.0 licence.
Windows, macOS, Linux	Windows, Linux
Combines image operations and AI upscaling in a visual pipeline.	Spreadsheet model recalculates dependent images when an input changes Built on the fast libvips image library
Some operations need additional models or processing dependencies.	No releases published on the GitHub repository Suited to processing pipelines rather than ordinary photo retouching
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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