CalDAV and CardDAV
Sync calendars, reminders, and contacts through RFC-compliant DAV endpoints across common mobile and desktop platforms.
Calendar and contact server
Private CalDAV and CardDAV hosting for people and small teams.
CalCard keeps calendars, reminders, and contacts in a dedicated hosted tenant that works with the devices and apps you already use.
Private tenant URL
SSO web sign-in
Revocable app passwords
Self-hostable source
Your hosted tenant
johndoe.app.calcard.app
Connect clients through DAV discovery at /dav.
Hosted for you
Open protocol sync without the server work.
JW6 Ventures runs the tenant, database, deployment, and updates so you can use standards-based calendar and contact sync without maintaining infrastructure.
SSO plus app passwords
Use OAuth-compatible SSO for the web UI and generate revocable app passwords for DAV clients.
Shared calendars
Standard and Team tenants include sharing so multiple users can work from the same calendar data.
Your data decisions
Your data is not sold. Export it, delete it, or move to self-hosting when your needs change.
Cloud plans
Choose a hosted CalCard tenant.
Every plan includes one private tenant. Prices are monthly.
Trial
Free
Try a hosted tenant before choosing a paid plan.
- One tenant
- 7 day free trial, renews as a Standard tenant
- Upto 3 users
Lite
$5/mo
Personal calendar and contact hosting.
- 1 user
- 12 month retention
- Sharing disabled
Recommended
Standard
$10/mo
Shared calendars for a household or small work group.
- Up to 3 users
- 36 month retention
- Sharing enabled
Team
$20/mo
More seats and longer retention for small teams.
- Up to 5 users
- 48 month retention
- Sharing enabled
Open Source
Self-host when that is the better fit.
CalCard is available under the AGPL License. Deploy with Docker, Kubernetes, or the Linux release binary when you want to run your own instance.
Docker
Run the GHCR image with your environment file and PostgreSQL 16.
Kubernetes
Install the Helm chart from GHCR and configure ingress, secrets, and database settings.
Linux
Use the release binary with the required environment variables and a PostgreSQL database.
Client support
Use the calendar and contact apps you already know.
CalCard works with CalDAV and CardDAV clients across iOS, Android, macOS, Windows, and Linux.
Apple Calendar
Apple Contacts
DAVx5 for Android
Thunderbird
GNOME Calendar
Other CalDAV and CardDav clients
Start private sync
Get a hosted CalCard tenant.
Reserve a tenant URL, choose a plan, and connect your devices through CalDAV and CardDAV.