Cal.com: Open Source Alternative to Calendly
Open-source scheduling infrastructure — embeddable, self-hostable.
Cal.com is the open-source scheduling infrastructure with 40k+ GitHub stars — a Calendly alternative with embeddable UI and team scheduling.
Compare Cal.com with SavvyCal and TidyCal before you choose your stack.
Key features
Scheduling
- Shareable booking links
- Round-robin and collective events
- Managed and team events
- Buffer time and availability rules
Integrations
- Google, Outlook, Apple calendars
- Zoom, Google Meet, Teams
- Stripe for paid bookings
- Webhooks and API
Embeddable
- React embed component
- WordPress and Webflow plugins
- Custom styling and branding
- White-label solution
Cal.com vs Calendly
| Cal.com | Calendly | |
|---|---|---|
| License | MIT (open source) | Proprietary |
| Deployment | Self-hosted available | Cloud SaaS |
| Data control | Your infrastructure | Vendor infrastructure |
| Customization | Full source access | Limited to vendor features |
| Cost | Free open-source software | Subscription or usage fees |
Choose Cal.com if you want open-source code, self-hosting options, and full control over your data and deployment.
Choose Calendly if you prefer a managed proprietary product with vendor support and minimal setup.
Browse more open-source alternatives to Calendly, or explore other tools in Scheduling.
At a glance
| License | AGPL-3.0 |
| Stack | TypeScript, Next.js |
| Self-hosted | Yes |
| Cloud | cal.com |
| Database | PostgreSQL |
Self-hosting
git clone https://github.com/calcom/cal.com.git
cd cal.com
yarn install && yarn build
yarn start
Requires PostgreSQL and a Redis instance.
FAQ
Is Cal.com a free alternative to Calendly?
Yes. Cal.com is open source under MIT. You can self-host it at no software cost — you only pay for infrastructure or optional managed services.
How does Cal.com compare to Calendly?
Cal.com gives you source code access, self-hosting, and data ownership. Calendly is a proprietary product focused on managed convenience. See the comparison table above for a side-by-side breakdown.
Can I self-host Cal.com?
Yes. Cal.com supports self-hosted deployment, which is a core reason teams choose it over Calendly. Check the Getting started or Self-hosting section for install commands.
Is Cal.com suitable for production?
Cal.com is actively maintained with a strong open-source community. Many teams run it in production as a Scheduling alternative to Calendly. Review the At a glance table for license and stack details.
What are alternatives to Cal.com and Calendly?
Browse alternatives to Calendly for more open-source options, including tools compared to SavvyCal. Explore the full Scheduling category for related projects.
Screenshots
