Baïkal

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Calendar & contacts · Vendor site 2026-10-04

Baïkal is a lightweight CalDAV and CardDAV server with a web administration interface for users, address books, and calendars. It targets self-hosters who want to sync contacts and calendars across iOS, Android, Thunderbird, and other DAV clients while storing data in MySQL, PostgreSQL, or SQLite.

Updated 2026-10-04View sources

Official website

Category: Calendar & contacts
Free access: Sabre.io states Baïkal is free and open-source under the GNU GPL v3 license.
API access: Not confirmed

Is Baïkal right for you?

A good fit for

Individuals and small teams replacing hosted calendar or contact sync with a simple PHP-capable self-hosted DAV server.

Before you choose

You must operate PHP-capable hosting and maintain database backups; Baïkal is not a full groupware suite beyond CalDAV and CardDAV.

Self-hosted CalDAV and CardDAV

Baïkal offers a compact server and admin UI so you can host calendars and contacts compatible with common mobile and desktop clients without relying on a third-party sync provider.

What it can do

Features & capabilities

Unknown is different from unavailable. Each fact carries its own evidence.

Capability	Value	Evidence	Checked
Protocols	Product page describes Baïkal as a lightweight CalDAV and CardDAV server with a web admin UI.	Facts sourced	2026-10-04
Storage backends	Documentation notes support for MySQL, PostgreSQL, or SQLite databases.	Facts sourced	2026-10-04
License	Vendor page lists Baïkal as GPL v3 open-source software built on sabre/dav.	Facts sourced	2026-10-04

Understand the total cost

Baïkal pricing & plans

Free

Sabre.io states Baïkal is free and open-source under the GNU GPL v3 license.

Access: Sabre.io states Baïkal is free and open-source under the GNU GPL v3 license.

Explore pricing & history

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The practical questions

Frequently asked questions

What is Baïkal used for?

Does Baïkal have a free plan?

Sabre.io states Baïkal is free and open-source under the GNU GPL v3 license.. This record lists ongoing free access; check the plan limits before starting.

How much does Baïkal cost?

No paid monthly price is listed; this record treats the product as free to start. See the plan cards for entitlements, billing commitments and seat minimums.

Can I use Baïkal through an API?

Not confirmed. API access and subscription access may have different terms; consult the linked sources.

What should I check before choosing it?

You must operate PHP-capable hosting and maintain database backups; Baïkal is not a full groupware suite beyond CalDAV and CardDAV.

Price history

No retained pricing changes yet. A current price alone does not establish a historical trend.

How this profile is supported

Identity and profile

Reviewed vendor source

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2026-10-04

Facts apply to the named version and check date. Send a sourced correction if something changed.