Baïkal
Lightweight CalDAV and CardDAV server based on sabre/dav.
- Groupware & Calendars
- PHP
- GPL-3.0
- Actively maintained
GitHub stats
- GitHub stars
- 3,328
- Forks
- 320
- Open issues
- 110
- Commits, last 12 months
- 28
- Last commit
- Aug 13, 2026
- Latest release
- 0.12.1Aug 5, 2026
- Created
- Feb 27, 2012
Data from the GitHub API, refreshed daily.
About Baïkal
Lightweight CalDAV and CardDAV server based on sabre/dav. Baïkal is open source under the GPL-3.0 license and written mainly in PHP, so you can read the code, run it on your own hardware and keep full control of your data.
The project has 3,328 stars and 320 forks on GitHub, with 28 commits over the last year. It installs natively rather than through an official Docker image, so plan for a short manual setup.
Open-source alternative to
Baïkal can replace these commercial products. Compare every option on each page.
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What is Baïkal?
Baïkal is a free, open-source app you can host on your own server, listed in our Groupware & Calendars category. Lightweight CalDAV and CardDAV server based on sabre/dav. The source code lives at github.com/sabre-io/Baikal, where it has 3,328 stars.
Is Baïkal free and open source?
Yes. Baïkal is open-source software released under the GPL-3.0 license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.
Can I run Baïkal with Docker?
Baïkal does not list an official Docker image. It installs natively (PHP), so follow the install steps in its README or look for a community-maintained container.
What are the best alternatives to Baïkal?
Popular open-source alternatives to Baïkal include Nextcloud, Seafile and Colanode. Baïkal itself is a self-hosted alternative to Google Calendar.
Is Baïkal actively maintained?
The most recent commit to Baïkal was on Aug 13, 2026 with 28 commits in the past twelve months. The latest release is 0.12.1, published Aug 5, 2026. Check the open issues on GitHub to gauge how quickly maintainers respond.