Compare software

jdupes vs Periscope: catalog facts
jdupes	Periscope
Free Free and open source under the MIT licence.	Free Periscope is free and open source under GPL-3.0.
Windows, macOS, Linux, Command line	Command line
Fast duplicate detection across large folders Can replace duplicates with hard links or symlinks	Interactive exploration of duplicate files Safe deletion commands require another copy
Command-line only, with no graphical interface Deletion options need care to avoid removing wanted files	Requires an initial filesystem scan Designed for command-line use
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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