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jdupes vs fdupes: catalog facts
jdupes	fdupes
Free Free and open source under the MIT licence.	Free Free and open source.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Fast duplicate detection across large folders Can replace duplicates with hard links or symlinks	Finds duplicates by file content Interactive or automatic deletion
Command-line only, with no graphical interface Deletion options need care to avoid removing wanted files	Terminal only, with no graphical interface Deleting files needs care to avoid removing the wrong copy
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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