Merkuro Calendar (formerly Kalendar) review
A capable Linux calendar for local, synced events and focused task management.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Merkuro Calendar is KDE’s open-source application for managing calendar events and tasks on Linux. It supports local calendars alongside connections to Nextcloud, Google Calendar, Outlook and CalDAV services, making it suitable for solo users and small teams that want one desktop calendar interface across local and synced schedules. The application was renamed from Kalendar to Merkuro in 2023 and is described for desktop and mobile form factors, with Linux installation available through AppStream-compatible software stores or distribution package managers.
Its calendar coverage is practical rather than narrowly focused: month, week and schedule views support different planning styles, while the task view adds task and subtask management. Customizable task filtering helps separate relevant work from a broader task list. This combination gives Linux users a single place for events and lightweight task planning, without limiting the product to one calendar service. Connections to Nextcloud, Google Calendar, Outlook and CalDAV also make it more adaptable for users whose calendars span personal, hosted or workplace systems.
Merkuro Calendar is most compelling for people who value free, open-source software and primarily work within a Linux environment. Its main trade-off is platform focus, which makes it less suitable for users who need broad cross-platform coverage or extensive collaboration features. Support is centered on community resources and documentation, so organizations seeking dedicated support may prefer another calendar application. Choose Merkuro for local and synced calendar management with integrated tasks; look elsewhere if team collaboration or a wider platform ecosystem is a priority.
Questions about Merkuro Calendar (formerly Kalendar)
What does Merkuro Calendar (formerly Kalendar) run on? Linux. It runs as a desktop app and as a mobile app.
What does Merkuro Calendar (formerly Kalendar) integrate with? 4 integrations: Nextcloud, Google Calendar, Outlook and CalDAV.
Who is Merkuro Calendar (formerly Kalendar) built for? Solo users and small businesses (our editorial estimate).
Merkuro Calendar (formerly Kalendar) pros and cons
- Where it wins
- Free and open source with local calendar support
- Connects to Nextcloud, Google Calendar, Outlook and CalDAV
- Combines calendar views with tasks, subtasks and filters
- Where it doesn't
- Linux platform focus limits broader device coverage
- Collaboration features are limited
- Community and documentation support may not suit teams needing dedicated support
Merkuro Calendar (formerly Kalendar) fact sheet, pricing and score →
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