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QOwnNotes vs KleverNotes: catalog facts
QOwnNotes	KleverNotes
Free Free and open source under the GPL.	Free Free and open source under the GPL-3.0 licence.
macOS, Linux	Linux
Notes are plain Markdown files, so nothing is locked in a proprietary format Works with Nextcloud and ownCloud Notes, or any file sync you already use	Markdown-based notes Native KDE application
Many of the better features assume a Nextcloud or ownCloud server The interface is dense and Qt-flavoured rather than native anywhere	Linux only Younger project than established note apps
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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