Radicale – Free and Open-Source CalDAV and CardDAV Server

Radicale is a free and Open Source CalDAV and CardDAV server.  Here are some of the features:

  • Shares calendars through CalDAV, WebDAV and HTTP.
  • Shares contacts through CardDAV, WebDAV and HTTP.
  • Supports events, todos, journal entries and business cards.
  • Works out-of-the-box, no installation nor configuration required.
  • Can warn users on concurrent editing.
  • Can limit access by authentication.
  • Can secure connections.
  • Works with many CalDAV and CardDAV clients.

Here is a blog post that provides some instructions on how to set it up and synchronize contacts and calendars between multiple services and applications.

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