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dupeGuru vs Detwinner Linux Edition: catalog facts
dupeGuru	Detwinner Linux Edition
Free Free and open source under the GPL 3.0.	Free Free and open source under GPL-3.0-or-later.
Windows, macOS, Linux	Linux
Fuzzy image matching finds resized and re-encoded copies Separate music mode that compares tags rather than bytes	Finds exact duplicates and similar images Offers file size, attribute and path filters
Last release was July 2022 and the project is asking for maintainers Fuzzy matching is slow on very large photo collections	Moving files to the trash is unavailable in the Flatpak installation.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	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 September 21, 2026	Official website Full listing and sources Checked October 8, 2026

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