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Scrolex vs Tofu: catalog facts
Scrolex	Tofu
Free Free and open source under the AGPL version 3 or later.	Free Free, with optional support for the developer.
Linux	macOS
Horizontal page layout suited to wide screens Optimized for HiDPI displays	Newspaper-style columns for easier reading Adjustable column width and column count
Viewer only, with no editing or annotation tools mentioned Small single-developer project	macOS only A focused reader with no library or annotation features described
Downloadable app	Downloadable app
Open source	Closed source
License: AGPL-3.0-or-later	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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