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qpdfview vs Papers: catalog facts
qpdfview	Papers
Free Free and open source under the GPL 2.0.	Free Free GNOME app, supported by donations to the GNOME Foundation.
Linux	Linux
Tabs for keeping several documents open SyncTeX support for LaTeX workflows	Annotation and highlighting of PDFs Opens DjVu, TIFF and comic book archives
Annotation and form support are rudimentary Slow release cadence	Linux only No full PDF text editing
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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