OpenCalendar Sync vs Baïkal
A side-by-side comparison of two self-hosted apps from related categories — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
OpenCalendar Sync
Self-hosted shared calendar with public event pages
VS
Baïkal
Lightweight CalDAV and CardDAV server with web admin
| Feature | OpenCalendar Sync | Baïkal |
|---|---|---|
| Category | Calendar & Contacts | Groupware |
| License | MIT | GPL-3.0 |
| Language | TypeScript | PHP |
| Setup difficulty | Medium | Easy |
| Min. RAM | 256 MB | 128 MB |
| Deployment | docker, source | docker, bare-metal, source |
| GitHub stars | ★ 852 | ★ 3,258 |
| First released | 2014 | 2012 |
| Replaces | Calendly, Google Calendar | Google Calendar, iCloud |
Why pick each one
Choose OpenCalendar Sync if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Written in TypeScript
- Tiny footprint — runs in 256 MB RAM
Frequently asked questions
Is OpenCalendar Sync or Baïkal better?
Baïkal is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider OpenCalendar Sync if its specific feature set fits your needs better.
Are OpenCalendar Sync and Baïkal free and open-source?
Yes. OpenCalendar Sync is licensed under MIT and Baïkal under GPL-3.0. Both can be self-hosted at no software cost.
Can I run OpenCalendar Sync and Baïkal with Docker?
OpenCalendar Sync: yes. Baïkal: yes.