ATRC shall use nextcloud for managing tasks. The older software named radicale shall not be supported further because nextcloud tasks contains all the capabilities to manage user tasks.
No, Radicale is not required if you are using Nextcloud’s built-in Tasks app.
Why?
Nextcloud includes its own native CalDAV/CardDAV server. The Nextcloud Tasks app stores and syncs tasks using the VTODO component of the CalDAV standard directly through Nextcloud’s internal DAV endpoint. You do not need an external CalDAV server like Radicale to make it work.
When would you actually need Radicale?
- You’re running a minimal, standalone CalDAV/CardDAV server instead of Nextcloud
- You want a lightweight sync layer for devices/apps that don’t support Nextcloud’s full stack
- You’re building a custom architecture where Nextcloud’s DAV server is intentionally disabled
- You need a separate, isolated sync endpoint for compliance or multi-tenant routing
⚠️ Important: Running Both Can Cause Issues
If you point your clients to both Nextcloud’s native CalDAV and a separate Radicale instance, you’ll likely experience:
- Duplicate or conflicting tasks
- Sync loops or failed pushes
- Authentication/permission mismatches
✅ Recommended Setup
- Keep Nextcloud’s built-in CalDAV server enabled (default)
- Connect your task clients directly to Nextcloud:
https://your-nextcloud-domain/remote.php/dav/calendars/<username>/tasks/ - Use the official Nextcloud Tasks web app, or compatible CalDAV clients (iOS Reminders, Thunderbird, GNOME Evolution, DAVx⁵, etc.)
If you’re trying to integrate Nextcloud Tasks with a specific device, app, or external workflow, tell me which one and I’ll give you the exact endpoint/config steps.
