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BookLogr vs Inventaire: catalog facts
BookLogr	Inventaire
Free Free and open source under the Apache 2.0 licence.	Free Free to use and open source under the AGPL-3.0 licence.
Web, Self-hosted	Web, Self-hosted
Book lookup by title or ISBN via OpenLibrary Export to CSV, JSON and HTML	Book data from ISBNs and Wikidata Share a library with friends and communities
Expect bugs and breaking changes during active development Tracks books rather than reading ebook files	Focused on books only Covers physical books rather than ebook files
Self-hosted	Web application, Self-hosted
Open source	Open source
License: Apache-2.0	License: AGPL-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 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.