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KOrganizer vs DankCalendar: catalog facts
KOrganizer	DankCalendar
Free Free and open source from the KDE community.	Free Free and open source under the MIT license.
Linux	Linux
Works with Nextcloud, Kolab, Google Calendar and CalDAV servers Integrated to-dos alongside the agenda view	Combines local, Google, Microsoft, CalDAV, and iCloud calendars Runs as a daemon with a tray icon
Best suited to the KDE Plasma desktop Depends on the Kontact/Akonadi stack	Linux desktop app
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
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 2, 2026	Official website Full listing and sources Checked October 8, 2026

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