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Spekter vs jdDiff: catalog facts
Spekter	jdDiff
Free Free and open source under the MIT license.	Free The Flathub listing identifies the software as GPL-3.0.
Linux	Linux
Recursive folder and file comparison Side-by-side and unified diff views	Compares individual files Compares directories
Linux desktop distribution is identified	Supplied package evidence is for Linux
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
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 October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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