this post was submitted on 05 Jun 2025
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Safest CalDAV/CardDAV server [Choice Made] (feddit.org)
submitted 2 days ago* (last edited 1 day ago) by A_norny_mousse@feddit.org to c/selfhosted@lemmy.world
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After my previous server got hacked (presumably), I am now looking for new solutions to my needs. CalDAV/CardDAV is a big one.

So far I switched from a content management system (PHP) to a static site generator for my blog, and I'm not looking back.

I wonder if it makes sense to also step away from PHP wrt CalDAV/CardDAV.

As ever so often, this list has some nice info.

I'd like to keep dependencies low. Python would be a good choice because it's already installed on my Debian Stable system. But would it be safer?

Back when I started this compatibility with clients was an issue; but I don't use Android anymore. In any case, is this still an issue?

edit: no, I don't use a web based app; and I'd prefer the server doesn't require admin via web UI either.

Thanks for all your replies! I chose Radicale, already set it up. Only what is needed, simple config files. Very nice. It runs under an nginx reverse proxy and they communicate encrypted (and of course the outside is also encrypted and password-protected). And the web UI can be disabled.

The documentation is very tutorial-like and security conscious.

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[–] CoyoteFacts@lemmy.ca 4 points 2 days ago (1 children)

I've never had any issues with Radicale, which is dead simple and lightweight. If you end up with Android again, DAVx5 has also never given me any trouble, and it also allows calendars to be cached offline. I'm not sure how you're having compatibility issues as I would think CalDAV is a standard protocol?

If you're concerned about dependencies and security, why not use Docker or Podman? It makes most of self-hosting in general much simpler, and it's much easier to secure since it's containerized. With containers, even if a hacker somehow hacks your CalDAV server, they can only access the minimal resources that you've given the container. I use this repo for Radicale on Docker.

[–] A_norny_mousse@feddit.org 2 points 2 days ago

I’m not sure how you’re having compatibility issues as I would think CalDAV is a standard protocol?

There used to be a mismatch between the spec and Google's implementation of it.