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Tellico vs Inventaire: catalog facts
Tellico	Inventaire
Free Free and open source under the GPL.	Free Free to use and open source under the AGPL-3.0 licence.
Linux	Web, Self-hosted
Fetches item details from Google Books, IMDB, Discogs, IGDB and more Custom collections and fields	Book data from ISBNs and Wikidata Share a library with friends and communities
Mainly aimed at Linux and KDE desktops Online lookups depend on third-party sources	Focused on books only Covers physical books rather than ebook files
Downloadable app	Web application, Self-hosted
Open source	Open source
License: GPL-2.0-only OR GPL-3.0-only	License: AGPL-3.0
No account needed	Not stated if an account is needed
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.