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Cal.com: the best Open Source alternative to Calendly in 2026

Cal.com is open source scheduling infrastructure: booking pages, event types, calendar integrations and video calls, fully customizable and self-hostable.

License AGPL-3.0 48k stars liveUpdated hace 21 díasWebsite GitHub Repository

Technical profile

License
AGPL-3.0
Category
Productivity
Replaces
Calendly
Tech stack
Next.jsPostgreSQLPrisma

Preview

Cal.com interface preview

Public image provided by Cal.com on its own website.

Key features

  • Custom booking pages
  • Google/Outlook Calendar sync
  • Built-in video calls (Cal Video)
  • Team meeting routing

Cal.com vs. Calendly

Pros

  • Fully white-label, your own domain and brand

Things to consider

  • Initial setup is more technical than signing up for Calendly

Quick Docker installation guide

Copy this docker-compose.yml, adjust the example passwords and run docker compose up -d on your server. See the full step-by-step guide →

docker-compose.yml
version: "3.9"
services:
  calcom:
    image: calcom/cal.com:latest
    restart: unless-stopped
    ports:
      - "3000:3000"
    environment:
      - DATABASE_URL=postgresql://calcom:calcom@calcom-db:5432/calcom
      - NEXTAUTH_SECRET=change-me-super-secret
      - CALENDSO_ENCRYPTION_KEY=change-me-32-char-key
    depends_on:
      - calcom-db
  calcom-db:
    image: postgres:15-alpine
    restart: unless-stopped
    environment:
      - POSTGRES_USER=calcom
      - POSTGRES_PASSWORD=calcom
      - POSTGRES_DB=calcom
    volumes:
      - calcom_pg_data:/var/lib/postgresql/data
volumes:
  calcom_pg_data: