# Merkuro Calendar

> Open-source calendar and task app from KDE for Linux

Merkuro Calendar is the calendar part of Merkuro, KDE's suite of email, calendar, contact and task apps, which was formerly known as Kalendar. It has month, week and schedule views and a task view with subtasks, and it works with local calendars as well as online ones such as Nextcloud, Google Calendar and Exchange through KDE's Akonadi framework. It is free software under GPL-3.0-or-later, built to be usable on both desktop and mobile screens.

- **Category:** Calendar & Scheduling
- **Made by:** KDE
- **Website:** https://apps.kde.org/merkuro.calendar/
- **Runs on:** Linux
- **Facts last checked:** Oct 9, 2026

## Pricing

Merkuro Calendar is free to use.

- **Pricing model:** Free
- **Free plan:** Free and open source under GPL-3.0-or-later, installed from a Linux distribution's packages or as part of the Kontact Flatpak. KDE lists no paid version and asks for donations.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| Merkuro Calendar | $0 | The complete app, installed through Discover, a distribution's package manager or the Kontact Flatpak. Release 26.08.2 is dated 2026-10-08. |

Read from https://apps.kde.org/merkuro.calendar/ on Oct 9, 2026. Prices change, so confirm with Merkuro Calendar before buying.

## Key features

- **Month, week and schedule views:** The month view gives an overview of the whole month, the week view shows each day hour by hour, and the schedule view lists upcoming events in order.
- **Tasks and subtasks:** A separate task view shows tasks and their subtasks as a tree, with filters that can be customized.
- **Local and online calendars:** Supports CalDAV calendars such as Nextcloud, Google and Exchange calendars, iCal files and folders, and Kolab and Open-Xchange groupware servers.
- **Sync through Akonadi:** KDE's Akonadi framework fetches, edits, creates and deletes events on remote services. The project recommends installing the kdepim-runtime package before starting the app.
- **Plasma clock widget integration:** Events can appear in the calendar of Plasma's digital clock widget by enabling the PIM Events Plugin in the widget's settings and choosing which calendars to show.
- **Desktop and mobile layouts:** The interface is designed for desktop, mobile and sizes in between, and the listing includes a mobile view. The project describes it as syncing across a Plasma desktop or phone.

## Good for

- KDE Plasma users who want a calendar made for their desktop
- Linux users syncing Nextcloud, Google or Exchange calendars
- People who keep tasks and subtasks next to their events

## Worth knowing

- Stable releases are for Linux. The Windows builds on KDE's site are nightly installers that KDE labels unstable and intended for testing.
- It depends on Akonadi and KDE PIM packages; without kdepim-runtime, the project says the calendar component is heavily restricted.
- The Kontact Flatpak that includes Merkuro lacks some desktop integration, such as the calendar applet plugin, so KDE recommends a distribution package.
- Proton Calendar cannot be connected, and services with non-standard calendars or task lists, such as Todoist, are not supported.

## Works with

Nextcloud, Google Calendar, Microsoft Exchange, Outlook, Kolab, Open-Xchange, CalDAV

**Tags:** Calendar, Tasks, Open source

## Alternatives

- [GNOME Calendar](https://toolgpa.com/tools/gnome-calendar): Free, open-source calendar app for the GNOME desktop on Linux. [Compare](https://toolgpa.com/compare/gnome-calendar-vs-merkuro-calendar)
- [Rainlendar](https://toolgpa.com/tools/rainlendar): Skinnable desktop calendar for Windows, Mac and Linux. [Compare](https://toolgpa.com/compare/merkuro-calendar-vs-rainlendar)
- [CalenGoo](https://toolgpa.com/tools/calengoo): Highly configurable calendar and task app sold as a one-time purchase. [Compare](https://toolgpa.com/compare/calengoo-vs-merkuro-calendar)
- [Tuta Calendar](https://toolgpa.com/tools/tuta-calendar): End-to-end encrypted calendar bundled with Tuta Mail. [Compare](https://toolgpa.com/compare/merkuro-calendar-vs-tuta-calendar)
- [Google Calendar](https://toolgpa.com/tools/google-calendar): Online calendar from Google, free with a personal account. [Compare](https://toolgpa.com/compare/google-calendar-vs-merkuro-calendar)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 9, 2026:

- https://apps.kde.org/merkuro.calendar/
- https://apps.kde.org/merkuro/
- https://invent.kde.org/pim/merkuro/-/raw/master/README.md

Page: https://toolgpa.com/tools/merkuro-calendar
Listed by ToolGPA (toolgpa.com).