Cal.com
Open scheduling infrastructure — shareable booking links, team round-robin, workflows and embeds, all self-hostable — the leading open-source alternative to Calendly.
CalendlyAbout Cal.com
Cal.com treats scheduling as infrastructure rather than a standalone app: shareable booking links, team round-robin routing, workflow automation and embeddable widgets are all built to be composed into your own product, not just used as-is.
It's self-hostable under AGPL-3.0 and backed by fast-moving, well-funded open-source development, which is a large part of why it has become the default open alternative to Calendly for teams that want to own their scheduling data.
Key features
- Booking links & round-robin — Shareable links plus team round-robin routing for distributing meetings fairly.
- Workflow automation — Automated reminders and follow-ups triggered by booking events.
- Embeddable widget — Drop a booking widget directly into your own website or product.
- Self-hostable — Run the full platform on your own infrastructure under AGPL-3.0.
The honest read
- Genuinely feature-complete Calendly replacement
- Self-hostable, so you own your scheduling data
- Strong API for building on top of it
- Fast-moving, well-funded open-source project
- Embeddable booking widget for your own product
- Self-hosting has more moving parts (Next.js, Postgres, Docker)
- Some advanced routing features are cloud/paid-only
- UI customization requires technical setup
- Smaller directory of native calendar integrations than Calendly
FAQ
Yes — Cal.com is free and open source under AGPL-3.0 to self-host, with a paid hosted cloud plan also available.
Yes — Cal.com ships an official Docker setup for self-hosting your own scheduling infrastructure.
Cal.com is open source and self-hostable, letting you own your scheduling data, while Calendly is a closed-source, cloud-only SaaS product.
Yes — Cal.com is built to be embedded as a widget or built on top of via its API, not just used as a standalone booking page.
TypeScript
Next.js
PostgreSQL
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