this post was submitted on 02 Apr 2026
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I need to add booking to my website. I stumbled upon cal.com which seemed great. However I've run into 2 issues.

My current options for calendars are Protonmail and cpanel/webmail/roundcube.

cal.com doesn't really work with either of these. For proton its mostly on proton's side, their calendars are read-only externally + a bit buggy: https://github.com/calcom/cal.com/issues/5756

Roundcube uses caldav, and cal.com's support is still in beta with most caldev's being unsupported: https://github.com/calcom/cal.com/issues/3457

Roundcube got me the farthest but the booking emails just don't get sent and the calendar event pops up maybe an hour later + there's 75% the booking just doesn't work. I was told this was the calendars fault 😂.

SO

Are there any selfhosted calendar implementations that support ics feed, external viewing ,etc etc that I can throw on a standard webserver?

Or are there any better foss booking systems?

I just need to book clients and connect it back to a working calendar that's not locked to a desktop. I thought this would be a solved problem in 2026...

I'm not trying to pay for yet ANOTHER software on top of business mail, and a webserver.

Thanks.

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[–] VanillaWasp@lemmy.dbzer0.com 3 points 2 days ago (2 children)

Maybe I'm misunderstanding, but you're saying shared/sync'd and updateable calendars outside of big tech like google is still an unsolved problem?

[–] non_burglar@lemmy.world 3 points 2 days ago* (last edited 2 days ago)

Sorry, I didn't mean to doom that answer.

It is possible, but it is complex and onerous. How much appetite you have for that is of course up to you.

The basic functionality of hosting my own caldav/cardav fully privately with synchronising across devices is enough for me.

[–] neon_nova@lemmy.dbzer0.com 3 points 2 days ago (1 children)

I’ve been looking into this a bit already. I’m actually on a road trip and will start driving soon, but if your respond to this comment I can fill you in on what I’ve learning in the next day or two.

[–] VanillaWasp@lemmy.dbzer0.com 1 points 2 days ago

never hurts to learn.