[Discuss] CalDav/CardDav servers?

[david at thekramers.net (David Kramer)]

I am trying to move the functionality off my home server onto my Ubuntu 
node at Linode.? I already have IMAP/SMTP moved over (thanks one again 
to those that helped). The website will be trivial.? The other big part 
is CardDav/CalDav.

Right now on my home server I am running an older version of OwnCloud 
(NextCloud is a fork of OwnCloud).? OwnCloud is a whole groupware thing 
with file repo, etc, but it also has a caldav/carddav server and 
client.? I'm thinking if I'm moving over to this linode server, running 
full groupware may be a little too resource heavy, since I really don't 
use the rest.? I *MAY* install NextCloud anyway.? Not sure.? If I DO 
install some sort of groupware, I would prefer to use one that does not 
have built in mail server, so I don't have to worry about 
dovecot/postfix conflicts.

The leading CalDav/CardDav with wide protocol support seem to be 
https://radicale.org/ and https://www.davical.org, and possibly 
http://sabre.io/

Does anyone have any experience with these or others?

Should I just install NextCloud or some other groupware without email?


Thanks.