Cal.com

Cal.diy is the self-hosted, community-maintained edition of Cal.com. It's built for individuals who want to run their own scheduling infrastructure on their own servers, without depending on a hosted service. It's not a drop-in replacement for Cal.com's commercial product. Teams, organizations, SSO, and several enterprise features are absent. What it does offer is a solid personal scheduling setup you fully control.

The scheduling core is complete. You can create event types, set recurring bookings, run seated events, and accept payments through Stripe or PayPal. Availability rules are detailed:

• Buffer times, booking limits, and minimum notice keep your calendar from being overrun
• Date overrides and travel schedules let you adjust availability without rebuilding your whole setup
• Out-of-office blocks are supported natively

Calendar integrations cover most of the major options. Google Calendar, Outlook, Apple Calendar, CalDAV, Zoho, Exchange, and ICS feeds all connect. For video, you get Zoom, Google Meet, Microsoft Teams, Webex, Jitsi, and Cal Video (via Daily.co). Conferencing options like Whereby and Huddle01 are also available.

On the automation side, webhooks, Zapier, n8n, Make, and Pipedream are all supported. CRM connections (HubSpot, Salesforce, Close) work, as do messaging apps like Discord, Telegram, and WhatsApp. Analytics tools including GA4, PostHog, and Fathom can be plugged in. What's missing compared to Cal.com is workflow automation and routing forms.

The embed options (inline, popup, floating button) and the v2 REST API are both present, so you can integrate your booking page into other sites or build on top of it programmatically.

Authentication covers email/password, Google OAuth, and Microsoft OAuth. SAML SSO and SCIM sync are not included.

Cal.diy suits developers or technically confident individuals who want a self-contained scheduling tool on their own infrastructure and are comfortable managing a server, database, and security themselves. It's explicitly not recommended for production or commercial use. If you need team features, an admin panel, or enterprise-grade reliability, Cal.com's hosted product is the intended path.