Radicale
A simple CalDAV (calendar) and CardDAV (contact) server
Alternative to: google calendar, google contacts, icloud calendar
About
Versions (78)
Radicale is a small but powerful CalDAV and CardDAV server that lets you share calendars, to-do lists, journal entries, and address books over standard protocols instead of relying on a cloud provider. It works out of the box with minimal configuration, supports authentication and TLS, stores data as plain files, and is compatible with a wide range of CalDAV/CardDAV clients on desktop and mobile.