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qpdfview vs Scrolex: catalog facts
qpdfview	Scrolex
Free Free and open source under the GPL 2.0.	Free Free and open source under the AGPL version 3 or later.
Linux	Linux
Tabs for keeping several documents open SyncTeX support for LaTeX workflows	Horizontal page layout suited to wide screens Optimized for HiDPI displays
Annotation and form support are rudimentary Slow release cadence	Viewer only, with no editing or annotation tools mentioned Small single-developer project
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: AGPL-3.0-or-later
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 October 1, 2026

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