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Difftastic vs Diff So Fancy: catalog facts
Difftastic	Diff So Fancy
Free The open-source application is available without a license fee.	Free The open-source application is available without a license fee.
Windows, macOS, Linux	Windows, macOS, Linux
Syntax-aware comparisons across many languages	Works with Git and standard unified diffs
It can use substantial memory and does not produce applicable patches.	It formats existing diffs rather than generating changes itself.
Downloadable app	Downloadable app
Open source	Open source
License: MIT	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 22, 2026	Official website Full listing and sources Checked September 22, 2026

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