Nextcloud Calendar is a modern, open source calendar application that runs inside the Nextcloud suite. It lets you create and manage calendars in your browser, sync events with multiple devices over CalDAV, and collaborate with other users through attendee invitations, free/busy scheduling and shared calendars — all under your own control.

Key Features

• CalDAV sync — Events sync with Android, iOS and desktop calendar clients over the standard CalDAV protocol.
• Attendee invitations — Invite people to events and track their response status.
• Free/Busy scheduling — See when attendees are free to meet and quickly find shared availability.
• Reminders — Set alarms that fire in the browser or via email.
• WebCal support — Subscribe to public calendars (for example a sports team’s fixtures) directly in the app.
• Appointment booking — Send people a link so they can book a time slot with you.
• Integrations — Works with other Nextcloud apps such as Contacts, Talk, Tasks and Deck, and supports event attachments and search.
• Web interface — Full-featured browser-based editor for event creation, editing and calendar management.

Why Use Nextcloud Calendar?

Nextcloud Calendar gives you a polished calendar experience without handing your schedule to a commercial cloud provider. Because it is part of the self-hosted Nextcloud stack, your events live on infrastructure you control and can be shared with others using the same instance, while CalDAV keeps your desktop and mobile clients in sync.

Use Cases

• Running a private calendar for you and your family on a self-hosted Nextcloud instance.
• Team scheduling with attendee invites and free/busy availability across users on one Nextcloud server.
• Subscribing to public webcals and combining personal events with shared team calendars in one view.

Platform

Web app (part of the Nextcloud platform) · CalDAV clients on Linux, macOS, Windows, Android and iOS

Licence

AGPL-3.0

Website

github.com/nextcloud/calendar