Calendar and address book with Dovecot

[Matthias Sitte]

> What other software (ideally open source, free) do I need in other to have
> Calendar and address book so my users can manage their contact on their
> phones or computer? I have looked at Roundcube already, but my requirement
> is not necessarily to provide web mail.

sabre/dav [1] is a PHP-based CalDAV/CardDAV server and easy to set up; docs are
really good with examples. Took me less than 30 min to set it up and get it
working with multiple Thunderbird/Icedove instances (you have to use SoGO
connector) and multiple iPhones.

If needed, you can integrate many backends and frontends like Roundcube as well.

  Matthias

[1] http://sabre.io/