What is Cal.com?
Cal.com is the open-source Calendly successor that gives you complete control over your scheduling infrastructure. Whether you’re an individual, a growing team, or an enterprise, Cal.com provides the tools you need to manage appointments, meetings, and bookings efficiently.Cal.com is licensed under AGPLv3 with enterprise features available under a commercial license. The core platform (99%) is fully open source.
Why Cal.com?
Scheduling tools like Calendly have transformed how we book meetings, but they come with limitations:- Limited control: You’re restricted by the platform’s features and design
- Data ownership: Your scheduling data lives on someone else’s servers
- Customization: White-labeling and deep integrations are often unavailable or expensive
- Privacy: Self-hosting isn’t an option for sensitive data requirements
Complete control
Self-host on your infrastructure or use our cloud. Your data, your rules.
White-label ready
Full customization and branding. Make it yours from the ground up.
API-first design
Build custom scheduling experiences with our comprehensive REST API.
Open source
Transparent, auditable code. Contribute, modify, and extend freely.
Key features
For individuals
- Flexible event types: Create one-on-one, group, and recurring meeting types
- Calendar sync: Two-way sync with Google Calendar, Outlook, Apple Calendar, and CalDAV
- Smart availability: Automatically show only available time slots based on your calendars
- Custom booking pages: Personalize your booking experience with custom branding
- Video conferencing: Built-in integration with Zoom, Google Meet, MS Teams, and more
For teams
- Round-robin scheduling: Distribute meetings evenly across team members
- Collective events: Host meetings that require multiple team members
- Team routing forms: Route bookings to the right person based on form responses
- Managed events: Assign someone to manage bookings on behalf of others
- Team billing: Consolidated billing and subscription management
For enterprises
- Organizations: Multi-team structure with centralized administration
- SSO & SAML: Enterprise authentication with your identity provider
- SCIM provisioning: Automated user management and directory sync
- Advanced workflows: Automated reminders, follow-ups, and custom actions
- Platform API: Build Cal.com into your product with OAuth 2.0
- Audit logs: Complete visibility into scheduling activities
Use cases
Sales teams
Sales teams
Schedule demos and sales calls with prospects. Integrate with your CRM (Salesforce, HubSpot, Pipedrive) to automatically log activities and create contacts.
Support teams
Support teams
Offer scheduled support sessions. Route customers to the right specialist using routing forms and integrate with your help desk.
Education
Education
Manage office hours, tutoring sessions, and parent-teacher conferences. Create recurring availability and share booking links with students.
Healthcare
Healthcare
Schedule patient appointments with HIPAA-compliant self-hosted deployment. Integrate with your practice management system.
Consulting
Consulting
Book client consultations and discovery calls. Collect payments at booking time with Stripe integration.
Embedded scheduling
Embedded scheduling
Build scheduling into your SaaS product using the Platform API and embed components. White-label the entire experience.
How Cal.com compares
| Feature | Cal.com | Calendly | YouCanBook.me |
|---|---|---|---|
| Open source | ✅ | ❌ | ❌ |
| Self-hosting | ✅ | ❌ | ❌ |
| White-label | ✅ | Enterprise only | Limited |
| API access | ✅ Free | Paid plans | Limited |
| Team scheduling | ✅ | ✅ | ✅ |
| Workflows | ✅ | Limited | Limited |
| Custom integrations | ✅ | Via API | Limited |
| Pricing | Free (self-hosted) | $10+/user/mo | $10+/user/mo |
Technology stack
Cal.com is built with modern, production-ready technologies:- Framework: Next.js 13+ with App Router and React 18+
- Database: PostgreSQL with Prisma ORM
- API: tRPC for type-safe APIs
- Authentication: NextAuth.js with support for OAuth, SAML, and SSO
- Styling: Tailwind CSS
- Testing: Vitest (unit tests) and Playwright (E2E tests)
- Monorepo: Yarn workspaces with Turbo for build optimization
Getting started
Ready to start scheduling? Choose your path:Quick start
Get up and running in 5 minutes with our cloud platform or Docker.
Installation guide
Detailed setup instructions for Docker, Vercel, Railway, and manual deployment.
API documentation
Build custom scheduling experiences with our Platform API.
Self-hosting
Deploy Cal.com on your own infrastructure for complete control.
Community and support
Join thousands of developers and teams building with Cal.com:- GitHub: Star us on GitHub - we’re one of the fastest-growing open source projects
- Discussions: GitHub Discussions for questions and ideas
- Contributing: Check our contributing guide to get involved
- Commercial support: Contact sales for enterprise support and licensing