Cal.com (Cal.diy)

Health v2 · maintenance only

Adoption not part of the score

48921 stars · 15301 forks observed · 2026-10-09

What it is AI-extracted, prompt v1, taxonomy v1, 2026-09-28, confidence 0.96

Cal.diy is an open‑source, self‑hosted scheduling platform built with the T3 stack (Next.js, TypeScript, Prisma, Tailwind CSS). It provides a web interface for creating and managing booking pages, integrations, and user authentication.

Use cases

• Create a personal booking page to let clients schedule meetings.
• Self‑host a calendar service for a small business without relying on third‑party SaaS.
• Integrate booking flows with existing tools like Zoom, Stripe, or Google Calendar.
• Run a private scheduling system for internal team meetings or resource reservations.
• Deploy a customizable appointment scheduler on a corporate intranet.

When to choose

• You need full control over data and deployment.
• You prefer an open‑source stack and want to avoid vendor lock‑in.
• Your team has the expertise to manage Node.js, PostgreSQL, and Docker deployments.

When to avoid

• You require enterprise features such as teams, SSO, or advanced analytics (these are only in Cal.com).
• You lack the resources to maintain a self‑hosted service or handle security updates.
• You need a fully managed, production‑grade scheduling service with guaranteed SLA.

Facets

application · maturity active

auth api-framework http-server web-framework routing templating web-development developer-tools hr windows cross-platform scheduling calendar t3-stack nextjs prisma tailwindcss trpc self-hosted linux macos docker nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="calcom/cal.diy")