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Calindori vs Merkuro: catalog facts
Calindori	Merkuro
Free Free and open source under the GPL-3.0 or later licence.	Free Free and open source under the GPL-3.0-or-later licence.
Linux	Linux
Stores calendars in the standard iCal format Handles both events and to-do items	Supports Nextcloud, Google Calendar, Outlook and CalDAV calendars Combines events, tasks and contacts in one app
Linux only Basic feature set compared with full desktop calendar suites	Linux only Fits best within the KDE Plasma desktop
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
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 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.