OpenCalendar Sync vs DAViCal
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
DAViCal
Server for sharing calendars and address books via DAV
| Feature | OpenCalendar Sync | DAViCal |
|---|---|---|
| Category | Calendar & Contacts | Groupware |
| License | MIT | GPL-2.0 |
| Language | TypeScript | PHP |
| Setup difficulty | Medium | Medium |
| Min. RAM | 256 MB | 256 MB |
| Deployment | docker, source | docker, bare-metal, source |
| GitHub stars | ★ 852 | ★ 200 |
| First released | 2014 | 2007 |
| Replaces | Calendly, Google Calendar | Google Calendar, Microsoft Exchange |
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
Choose DAViCal if…
- Released under the GPL-2.0 license
- First-class Docker support for quick deployment
- Written in PHP
- Tiny footprint — runs in 256 MB RAM
Frequently asked questions
Is OpenCalendar Sync or DAViCal better?
Neither is universally better. OpenCalendar Sync has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are OpenCalendar Sync and DAViCal free and open-source?
Yes. OpenCalendar Sync is licensed under MIT and DAViCal under GPL-2.0. Both can be self-hosted at no software cost.
Can I run OpenCalendar Sync and DAViCal with Docker?
OpenCalendar Sync: yes. DAViCal: yes.