Radicale. I just finished setting it up and with that, I can now finally shut down Nextcloud.
this post was submitted on 14 Sep 2025
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How do you handle shared calendars with radicale?
There is a symlink trick on the server side. It's a little annoying that it is only a workaround, but one set up it's great! I was looking for the git issue where i found it, but was only able to find this one (it seems to be documented now).
Thank you! I'd wish Radicale would include a dedicated sharing feature, at least there's a workaround.
I have had positive experiences with both Radicale and Baikal. I am not sure about the Home Assistant integration, but they both use CalDAV, so I would be surprised if there wasn’t a way of connecting them. iOS has native support for CalDAV, but Android needs the davx5 app (free on F-Droid).
I've found radicale more stable in my implementation, but both are very good and are pretty similar to use.
If you already have NextCloud/OwnCloud it would be a good to use the Calendar that is already built in, but it doesn't make sense to install those for a calendar when there are better options available.
Tasks.org also works great with CalDAV. On f-droid as well.
I run Nextcloud for this. Never understood the complaints about it, I find it hard to believe everyone's so short of CPU power that Nextcloud is anything more than a rounding error running in the background.
There's half a dozen of us using it for shared calendars, files, and contacts.
Currently around 6TB of files, a couple of hundred or so contacts in the shared contacts list, and many recurring (and one off) events.
Been working perfectly since before Nextcloud forked from OwnCloud.
If you don't follow their tuning guide, Nextcloud does run very poorly on SQLite and without Redis/caching. Apache also performs significantly worse than nginx + php-fpm.
https://docs.nextcloud.com/server/latest/admin_manual/installation/server_tuning.html
It does run very well with Postgres + Redis + php-fpm + OPcache and has been pretty much the center of my selfhosting endeavor since ownCloud times.
The AIO mastercontainer seems to do fine on Apache, but when I had it dockerized myself, I used nginx and it was fine. I really think the main point is using postgres and redis. Mysql isn't great and sqlite is terribad in the stack.
Nextcloud 🤷♂️
I'm using Nextcloud as well, but I'll admit that it's probably a bit heavy if all one needs is a calendar.
Definitely overkill for just a calendar app but the great thing about NextCloud is once you spin it up there’s probably an integration for the next 5 FOSS solutions you’re looking for, which means fewer containers to manage in Docker.
Definitely, that's what I'm doing as well. I've found some to be lacking for my needs (e.g. music), but most of them are good enough for most use cases.
You can connect nextcloud to home assistant, I do that
For what? I use both maybe I should hook them up too. :)
I use nextcloud as my main calendar, I have home assistant pull in things from that calendar to drive automations.
Like if I'm on holiday from work, don't run my standup automation to make desk rise.
Why no container?
Oh I'm sure it runs perfectly fine in a container, it's just not my preferred setup.
I used both radicale and baikal. Both work great. Both support CalDAV and CardDAV, to sync with them you need thr davx5 app on android. I ended up going with radicale because it supports proxy authentication and I can use it with Authelia
I use Radicale för it.
I tried radicale. Nextcloud is easier to manage. That's what I recommend.
i don't think the need for a plain calendar warrants a resource monster such as nextcloud.
The protocol is called CalDAV (and CardDAV for contacts).
Plenty applications exist that can do it on both sides - it's not like you need a specific client app that fits your specific server app.
FWIW, I find NextCloud too bloated and prefer Radicale for the above mentioned.
And yes, it runs in Docker.
Fossify Calendar in f-droid and Nextcloud. Termux calcurse-caldav and Nextcloud.
i had radicale working as you describe with home assistant and mobile/desktop apps for years
Baikal is another option, light on resources and easy to setup
What about a web GUI for calendars? Not nextcloud.
InfCloud. Works well with Radicale, and does contacts, too.
It's not pretty, but works very well for the 5/100 times I want to check through a browser instead of Calendar app / Thunderbird.
Thanks, i also found this https://github.com/ckulka/infcloud-docker dockerization of infCloud, will try that one when i have time.
I use sogo for that. Includes a web interface as well as proper authentication mechanisms and sync integration. Is also lightweight and even allows LDAP integration oif you like.
Also caldav support for tasks and events as well as carddav for contacts. Also allows connections to any email account for sharing calendar events and being invited via email.