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DevDocs vs Manuals: catalog facts
DevDocs	Manuals
Best for: Searchable, offline-capable browser for hundreds of API documentation sets	Best for: GNOME and GTK developers reading API documentation offline
Free The open-source application is available without a license fee.	Free Free and open source under the GPL-3.0-or-later licence.
Web, Self-hosted	Linux
One search box across every documentation set you enable Works offline once documentation sets are downloaded	Indexes local devhelp documentation Browse documentation by SDK All 3 strengths for Manuals Indexes local devhelp documentation Browse documentation by SDK Fast free-form search
Documentation sets lag their upstream sources Only covers the projects the community has packaged	Linux only Mainly useful for GTK and GNOME development
Web application, Self-hosted	Downloadable app
Open source	Open source
License: MPL-2.0	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for DevDocs devdocs.io github.com/freeCodeCamp/devdocs Catalog checked September 22, 2026	Official website Full listing and sources Sources for Manuals apps.gnome.org/Manuals Catalog checked October 1, 2026

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