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Kaleidoscope vs Difftastic: catalog facts
Kaleidoscope	Difftastic
Paid Paid app with a free trial.	Free The open-source application is available without a license fee.
macOS	Windows, macOS, Linux
Compares text, images and folders Three-way merge with commit context	Syntax-aware comparisons across many languages
A diff and merge tool, not a full Git client Paid after the trial	It can use substantial memory and does not produce applicable patches.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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