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KOrganizer vs Cfait: catalog facts
KOrganizer	Cfait
Free Free and open source from the KDE community.	Free Free and open source under the GPL-3.0-only licence.
Linux	Windows, Linux, Android
Works with Nextcloud, Kolab, Google Calendar and CalDAV servers Integrated to-dos alongside the agenda view	Works with standard CalDAV servers Cross-platform across desktop and Android
Best suited to the KDE Plasma desktop Depends on the Kontact/Akonadi stack	Needs a CalDAV server for syncing Little documentation on the developer's homepage
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-only
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 1, 2026

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