
Which is more popular?
Based on our record, Baïkal seems to be more popular. It has been mentioned 23 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | sabre.io | opalstack.com |
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What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


No analysis of Baïkal yet.
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How often each product is chosen within a category, 0–100% relative to the other.


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Recommendations tracked on public social media and blogs since March 2021.


Maybe check baikal https://sabre.io/baikal/ comming from Nextcloud it was a lot simpler to host. - Source: Hacker News / about 2 years ago
I'm sure there are many ways, but I used https://sabre.io/baikal/ to get a CalDAV and CardDAV server on cheap (shared, bog standard) web hosting, and then pointed Thunderbird to it. Apart from automatic syncing of contacts between... - Source: Hacker News / almost 3 years ago
I use Baikal. It's a CalDav and CardDav server which run easily on a NAS with Docker for example. Source: over 3 years ago
Tracking Opalstack since Sep 2023.
When comparing Baïkal and Opalstack, you can also consider the following products.

The Radicale Project is a complete CalDAV (calendar) and CardDAV (contact) server solution.
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SOGo is groupware server with a focus on scalability and open standards.
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CalendarServer is a standards-compliant server implementation of the CalDAV and CardDAV protocols, including iMIP and APNS.
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