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Kaleidoscope vs VisualDiffer: catalog facts
Kaleidoscope	VisualDiffer
Paid Paid app with a free trial.	Free Free and open source.
macOS	macOS
Compares text, images and folders Three-way merge with commit context	Side-by-side folder and file comparison Include and exclude filter rules
A diff and merge tool, not a full Git client Paid after the trial	macOS 13 or later only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
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 23, 2026	Official website Full listing and sources Checked October 1, 2026

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