08 / Collaboration & knowledge
Calendar — Calendar and contact sync
Math7 Calendar is a CalDAV and CardDAV server. Keep calendars, tasks, and contacts in one private place and sync them with the apps you already use.
- Access
- Team sign-in required
- Runs on
- Radicale 3.8 · CalDAV/CardDAV
- Live status
- Checking
Who it is for
- People who want calendars outside big cloud platforms
- Teams sharing a schedule across phones and desktops
- Anyone who uses Thunderbird, Apple Calendar, or DAVx⁵
What you can do
Standard protocols
CalDAV and CardDAV work with Apple devices, Thunderbird, DAVx⁵ on Android, and many other clients.
Calendars and contacts
Store events, tasks, and address books side by side.
Lightweight server
Radicale stores data as plain files, which keeps it fast and easy to back up.
Getting started
- 01
Open calendar.math7.com and sign in to see your collections.
- 02
Create a calendar or address book in the web interface.
- 03
Add the collection URL to your calendar or contacts app with the same account.
Access
The calendar server requires a team account.
Privacy and data
Events and contacts are stored on the Math7 server and are only shared with the clients you connect.
Common questions
Which apps can I use?
Any app that supports CalDAV or CardDAV, including Apple Calendar and Contacts, Thunderbird, and DAVx⁵ on Android.
Is there a web calendar view?
The web page manages collections. Use a calendar app to view and edit events.