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Pitak vs Openshelf: catalog facts
Pitak	Openshelf
Free Free and open source under the GPL 3.0 or later.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Works fully offline Lending records kept in an encrypted vault	No account and data stays on the device Flexible organisation by category, collection and imprint
Very young project with few users Catalogues physical books rather than reading ebooks	Android is the supported platform No cloud sync between devices
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-only
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 October 2, 2026

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