Cal.com
Open-source scheduling infrastructure — embeddable, self-hostable.
MIT-licensed alternative to Calendly with round-robin, team events, and Stripe integration. React embed component and WordPress/Webflow plugins.
TidyCal is a proprietary scheduling tool best known for its one-time lifetime-deal pricing through AppSumo rather than a recurring subscription. It covers the standard booking-page workflow — calendar sync, reminders, and payment collection via Stripe or PayPal — but it's closed source, so customization is limited to what TidyCal's settings expose.
If you want the same booking-link functionality with full source access and the option to self-host instead of relying on a third-party lifetime deal, Cal.com is the open-source equivalent.
FAQ
Is there a free, open-source alternative to TidyCal?
Yes. Cal.com is open source and free to self-host, with no dependency on a third-party lifetime-deal marketplace.
What's the best open-source alternative to TidyCal?
Cal.com is the closest match, offering booking pages and calendar sync with the added option of self-hosting and customizing the source directly.
What are the top open-source alternatives to TidyCal?
Browse all open-source alternatives to TidyCal above, or explore the full Business & Finance category for more options.