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.
What makes it different
Shareable links plus team round-robin routing for distributing meetings fairly.
Automated reminders and follow-ups triggered by booking events.
Drop a booking widget directly into your own website or product.
Run the full platform on your own infrastructure under AGPL-3.0.
TypeScript
Next.js
PostgreSQL
DockerThe 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
Quick answers
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.
More open-source picks
Workflow automation with 400+ integrations and native AI nodes.
Issue tracking and project planning with cycles and modules.
All-in-one project management, virtual office and team chat.
Own this page. Tell your story to buyers.
Claim Cal.com to add screenshots, respond to reviews and reach founders comparing tools — free to start.