Unified identity model
One account, two auth channels. Session-based web auth supports TOTP two-factor authentication with backup codes, while DAV clients use HTTP Basic auth with app passwords when 2FA is enabled.
Your calendars. Your contacts. Your server.
A self-hosted CalDAV and CardDAV server with a modern web dashboard. Manage calendars, contacts, sharing, and client compatibility, then protect everything with automated backup rotation and one-click restore imports.
$ docker compose up
-d
[+] Running 2/2
✓ Network davvy_default Created
✓ Container davvy Started
Davvy running at
localhost:8080
$
Works with your existing clients
Apple Calendar
Thunderbird
DAVx5
iOS & macOS
Other DAV Clients
Standards-based DAV Clients
Capabilities
Everything you need to run your own sync stack
Built for day-2 operations. Not a demo.
Granular sharing controls
Three permission levels—read-only, editor, admin—enforced across web operations and DAV requests.
Strict-first validation
RFC-compliant payload validation by default with an admin-controlled compatibility mode for legacy clients.
Managed contacts
Optional managed contacts with bi-directional contact-to-vCard sync. Family related-name links stay aligned with inverse mapping, including pronoun-aware labels with neutral fallback. Optional moderation queues support cross-owner review workflows.
Milestone calendars
Auto-generate birthday and anniversary calendars from contact data, including combined couple anniversaries when spouse relationships are inferred. Optional Apple compatibility mirroring improves visibility in iOS and macOS.
Automated backup + restore
Capture local and optional S3 snapshots with daily, weekly, monthly, and yearly retention tiers, then restore from ZIP archives in Admin Control Center.
Admin control center
Feature flags, user management, cross-user share controls, and queue retention—all from one dashboard.
Getting started
Running in three steps
1
Deploy
Run the Docker image or deploy to Railway, Coolify, or any container host.
2
Create users
Each user gets a personal calendar and contacts collection automatically.
3
Connect clients
Connect standards-based CalDAV/CardDAV clients to your server. Well-known autodiscovery and manual paths are both supported.
Connect from anywhere
Davvy exposes standard CalDAV and CardDAV endpoints with well-known autodiscovery. Supported clients can autodiscover, and manual DAV paths are documented when needed.
Autodiscovery
Well-known redirects at
/.well-known/caldav and
/.well-known/carddav
Credential model
Use account email + password for web sign-in. Use DAV app
passwords in supported clients when 2FA is enabled.
Sync tokens
Incremental sync support for efficient client
updates
Server details
- DAV endpoint /dav
- Auth method Basic Auth (+ app passwords)
- Docker port (quick start) 8080
- Health check /up
- Engine SabreDAV 4.x
- Export formats ICS / VCF / ZIP
- Backup tiers Daily / Weekly / Monthly / Yearly
- Restore modes Merge / Replace / Dry-run
Free and source-available
Davvy is licensed under the Davvy Source-Available License 1.0 (DSAL-1.0). Internal commercial use is allowed; resale and competing hosted services require separate commercial terms.