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Anx Reader vs Librum: catalog facts
Anx Reader	Librum
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux
Runs on Android, iOS, Windows, macOS and Linux AI features built into the reader	Reader and library manager in one app Runs on several desktop platforms
AI features likely depend on an external model provider Feature set may be more than needed for simple reading	Sync depends on the project's service Smaller project than established readers like Calibre
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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