OpenCalendar Sync vs calcurse
A side-by-side comparison of two self-hosted calendar & contacts options — 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
calcurse
Text-based calendar and scheduling application
| Feature | OpenCalendar Sync | calcurse |
|---|---|---|
| Category | Calendar & Contacts | Calendar & Contacts |
| License | MIT | BSD-2-Clause |
| Language | TypeScript | C |
| Setup difficulty | Medium | Easy |
| Min. RAM | 256 MB | 16 MB |
| Deployment | docker, source | binary, source |
| GitHub stars | ★ 852 | ★ 1,301 |
| First released | 2014 | 2004 |
| Replaces | Calendly, Google Calendar | Google Calendar |
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 calcurse if…
- Released under the BSD-2-Clause license
- Easy to set up — beginner-friendly
- Active community (1.3k GitHub stars)
- Written in C
Frequently asked questions
Is OpenCalendar Sync or calcurse better?
calcurse 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 calcurse free and open-source?
Yes. OpenCalendar Sync is licensed under MIT and calcurse under BSD-2-Clause. Both can be self-hosted at no software cost.
Can I run OpenCalendar Sync and calcurse with Docker?
OpenCalendar Sync: yes. calcurse: check the project docs for container support.