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Liferea vs Alligator: catalog facts
Liferea	Alligator
Free Free and open source under the GPL.	Free Free and open source under the GPL-2.0-or-later.
Linux	Linux
Offline reading with locally cached articles Syncs with several self-hosted and hosted reader accounts	Adaptive layout for desktop and phone screens Supports standard RSS and Atom feeds
Linux only Interface follows an older three-pane convention	Fewer features than KDE's larger Akregator reader Linux only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0-or-later
Not stated if an account is needed	No account 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 October 1, 2026

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