Self-hosters controlling booking data
Use Cal.diy when you want to run booking pages and scheduling flows on infrastructure you operate.
Skip if:
Skip it if you need a supported managed scheduling service.

Open source alternative to Calendly, Acuity Scheduling and SimplyBook.me
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Cal.diy is the MIT-licensed community edition of Cal.com for self-hosted scheduling, built for teams that want control without hosted Cal.com enterprise features.
Use Cal.diy when you want to run booking pages and scheduling flows on infrastructure you operate.
Skip it if you need a supported managed scheduling service.
Cal.diy fits teams that want source access before adapting scheduling behavior or embedding booking workflows into their own product.
Skip it if a simple hosted booking link is enough.
Hosted scheduling products are quick to adopt, but they can become limiting when booking flows need source access, data control, custom deployment choices, or product-level integration. Cal.diy gives self-hosters a Cal.com-derived codebase for running scheduling on their own infrastructure while keeping commercial Cal.com features out of the open-source claim.
Cal.diy provides Calendly-style booking pages, availability rules, and scheduling flows that self-hosters can run from their own stack.
The MIT repository gives teams source access for adapting booking behavior, integrations, and deployment details.
Cal.diy removes Cal.com enterprise and hosted-product code so the listing points at the community edition, not commercial Cal.com.
Cal.diy is a stronger fit when scheduling needs source access, self-hosting, and developer-controlled deployment. Calendly is a better fit for teams that only want a managed booking page with minimal setup. Choose Cal.diy when operating the scheduling stack yourself is worth the control; choose a hosted tool when speed and vendor support matter more than source ownership.
No. Cal.diy is the MIT-licensed community edition for self-hosters. Commercial and enterprise Cal.com features are separate from this listing.
Cal.diy can replace Calendly-style booking pages when you are willing to operate the scheduling stack yourself. Calendly is simpler for hosted scheduling.
The canonical Cal.diy repository reports MIT licensing. Review the upstream repository before using it in production.
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Self-host Cal.diy on a Hostinger VPS.
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