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Xreader vs Papers: catalog facts
Xreader	Papers
Free Free and open source under the GPL 2.0.	Free Free GNOME app, supported by donations to the GNOME Foundation.
Linux	Linux
Opens many formats including DjVu, XPS and comic archives Actively maintained by the Linux Mint team	Annotation and highlighting of PDFs Opens DjVu, TIFF and comic book archives
Linux only Some formats depend on optional backend libraries being installed	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.