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Folio vs Marknote: catalog facts
Folio	Marknote
Free Free and open source under the GPL-3.0.	Free Free and open source under the GPL-2.0-or-later licence.
Linux	Windows, macOS, Linux
Almost WYSIWYG Markdown editing Native GNOME design	Notes stored as plain Markdown files you own Rich text editing with an optional source mode
Linux only, designed for GNOME No built-in sync described	No built-in sync between devices Fewer features than larger knowledge-base apps
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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