Open source Calendly alternative
Open Source
Self-Hostable
No Logs
Nextcloud Calendar
CalDAV calendar with booking built into Nextcloud
Open Source
Self-Hostable
No Logs
Free
Included with Nextcloud. Appointment booking is a built-in feature.
Quick Specs
| Open Source | ✓ Yes View code |
|---|---|
| E2E Encrypted | ✗ No |
| Zero Knowledge | ✗ No |
| Self-Hostable | ✓ Yes |
| No Logs Policy | ✓ Yes |
| Audited | ✗ No |
| Jurisdiction | Germany |
| Pricing | Free |
About Nextcloud Calendar
Full calendar app with appointment booking feature. Share availability and let others book time slots. Integrates with Nextcloud Talk for automatic meeting links. Standard CalDAV works with any calendar app.
Best For
Organizations already using Nextcloud
Security Considerations
A tool is only as effective as its implementation. Consider these factors:
- Configuration matters: Default settings may not match your threat model. Review security options carefully.
- Training is essential: Tools protect nothing if your team doesn't use them correctly or consistently.
- Integration points: Consider how this tool connects with your existing systems and what data flows between them.
- Continuity planning: Ensure you have backup access methods and know the recovery process.
Need help implementing this securely? Take our free assessment or book a discovery call.