My quest to avoid Google and their extreme personal data collection is almost complete, but we're still using Google calendar via Thunderbird. My NAS provides a calendar app, but I've so far been unsuccessful trying to make it useful for us. I also have a 24/7 Solus server that could be used to host a better calendar, so I'm looking for a good Linux-based version.

Are there any suggestions here for such? Obviously, it needs to be multi-user, but on Linux that should be no problem. Since we've used the Google calendar for years, ideally the new one would let us import all of our repeating entries (family birthdays, etc.) from there.

    I just switched my personal calendars (and contacts) from iCloud to mailbox.org's open-xchange. I really like the interface and it works very well with macOS, iOS and Android devices and also with Thunderbird's Cardbook extension which I like a lot. I have also tried the calendar and contact apps in my nextcloud instance but found that to be less polished and harder to figure out on the clients mentioned above. But it does also work!

    Next step will be shared family calendars and todo lists but first tests suggest they also work well. What I'd be interested in are gnome calendar and contacts clients that work with caldav and carddav and work better than gnome-calendar.

    Since seeing your post re mailbox.org I have had a look at it and am tempted to sign up.

    You say it works well with Thunderbird, why are you looking for other Gnome clients? I would be hoping to use it with Thunderbird and move away from Gnome calender and Geary that I use at the moment with gmail.

    • n2o replied to this.

      babybio Mailbox.org is completely hosted in Germany and they take security and privacy very seriously. So is posteo by the way, but they don't use open-xchange which I really like.

      Regarding Thunderbird I was talking about the address book, more specific the CardBook addon. I'm not such a great fan on the Lightning calendar addon though. At least in my tests with multiple, shared calendars I did not get the impression of 100% deterministic behaviour.

      I come from an Apple centric setup and I've got to say that in macOS and iOS with iCloud sync everything has been working very well. But even if it's a golden cage it's still a cage and I want to leave it eventually. The only things I'm really missing is a decent address book and calendar app, PDF manipulation and, of course, omnioutliner.

        I changed my services about six months ago. I use Mailbox.org as well. It syncs with Thunderbird and my mobile device. I use LineageOS for MicroG on my mobile device and the DAVx5 app for synchronization with the native apps. I use the OX Drive app to access my storage in Mailbox.org.

        For Thunderbird, I'll try out the Cardbook extension. I currently use Lighting but I suspect that some portions of the calendar, like birthdays, do not come across. I'm not sure if that is a limitation of Mailbox or the synchronization services. Otherwise the rest of calendar, adresses, and encryption work fine.

        I used Posteo for awhile too, which was good, but prefer Mailbox.org for a complete Google suite replacement (email, addressbook, calendar, docs, and storage). It‘s missing an alternative for Keep so I use Standard Notes. You also get more aliases with Mailbox and can use your own domain. All that persuaded me to move from Posteo to Mailbox.

        DAVx5 for Android
        Lighting / Cardbook for Thunderbird

        WetGeek You'd want to set-up a calendar server on your Solus server or NAS, right?

        This is a quite interesting idea which I never considered. I am not using any calendar app right now, just because I am concerned about privacy. Maybe I'll also have a look at setting up a server. Quickly searching the web I found this:

        https://www.linux.com/tutorials/five-best-open-source-calendar-servers-linux/

        Maybe a starting point?

            bolofar You'd want to set-up a calendar server on your Solus server or NAS, right?

            Right. And thank you for researching those options! Sounds to me like Radicale is the one that would fit my needs best.

            Since Thunderbird/Lightning is the only user interface we need here, a server that just reads and writes date information to a database is all I need in a calendar server. Indeed, that looks like a good starting point. Thanks!

              @WetGeek Please make sure you let us know how that went! It'd be interesting if Radicale works on a shared space and if it also supports CardDav. Right now the website seems to be down.

                n2o Please make sure you let us know how that went!

                Indeed. If I get stuck, I might need some help with it. I have a hardware project to finish first, though (the server in question). It will be a little while before I can get started on the software part of the project.

                The question I need to answer first of all, is whether Radicale supports multiple users. If not, I'll need to keep looking.

                EDIT: Looks like this might answer some of our questions, https://radicale.org

                    WetGeek Ah there we go. The link from linux.com above pointed to www.radicale.org which is not being forwarded to radicale.org . So the site is working and from what I read it does support carddav and multiple users but I guess it doesn't run on a shared space because it needs to run its own daemon. Looks cool though!

                      Google Calendar + GNOME Calendar.