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Fossify Documents vs Librera Reader: catalog facts
Fossify Documents	Librera Reader
Free Free and open source under the GPL 3.0, with no ads.	Free Free to download.
Android	Android
Opens PDF, DOCX, Markdown, CSV and HTML in one app Edits text, Markdown and CSV files	Wide format support including DjVu and comics Auto-scan of book folders with reading progress
Still in beta DOCX files are view-only	Android only Many settings can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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