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Biblioteca vs DevDocs: catalog facts
Biblioteca	DevDocs
Best for: Developers writing GNOME and GTK apps who want offline docs	Best for: Searchable, offline-capable browser for hundreds of API documentation sets
Free Free and open source under the GPL-3.0 licence.	Free The open-source application is available without a license fee.
Linux	Web, Self-hosted
Reads GNOME documentation without an internet connection Native GNOME interface All 3 strengths for Biblioteca Reads GNOME documentation without an internet connection Native GNOME interface Available on Flathub	One search box across every documentation set you enable Works offline once documentation sets are downloaded
Limited to GNOME documentation Small project with infrequent updates	Documentation sets lag their upstream sources Only covers the projects the community has packaged
Downloadable app	Web application, Self-hosted
Open source	Open source
License: GPL-3.0	License: MPL-2.0
No account needed	Not stated if an account is needed
Offline features available	Not stated if it works offline
Official website Full listing and sources Sources for Biblioteca biblioteca.sonny.re Catalog checked October 1, 2026	Official website Full listing and sources Sources for DevDocs devdocs.io github.com/freeCodeCamp/devdocs Catalog checked September 22, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.