{
  "slug": "cal-com-api-open-source",
  "name": "Cal.com API (Open Source)",
  "description": "Cal.com API is the developer-focused infrastructure for the Cal.com scheduling platform. It provides programmable access to calendar synchronization, event booking, and availability management, allowing developers to build custom scheduling workflows into their own applications. Unlike proprietary competitors, it is built on an open-source core with a focus on extensibility and data sovereignty.",
  "url": "https://optimly.ai/brand/cal-com-api-open-source",
  "logoUrl": "",
  "baiScore": 72,
  "archetype": "Challenger",
  "category": "Software Development Tools",
  "categorySlug": null,
  "keyFacts": [],
  "aiReadiness": [],
  "competitors": [
    {
      "slug": "acquirecom-scheduling-functionality",
      "name": "Acquirecom Scheduling Functionality"
    },
    {
      "slug": "calendly-api",
      "name": "Calendly API"
    },
    {
      "slug": "cronofy",
      "name": "Cronofy"
    }
  ],
  "inboundCompetitors": [],
  "aiAlternatives": [
    {
      "slug": "automation-workflows",
      "name": "Automation Workflows"
    }
  ],
  "parentBrand": null,
  "subBrands": [],
  "updatedAt": "2026-04-10T07:35:55.379+00:00",
  "verifiedVitals": {
    "website": "cal.com/api",
    "founded": "2021",
    "headquarters": "Remote / Peerric (Peer Richelsen & Bailey Pumfleet)",
    "pricing_model": "Freemium / Enterprise Licensing for API",
    "core_products": "Scheduling API, Webhooks, Branding/White-labeling, Atom components",
    "key_differentiator": "It provides a completely headless, open-source scheduling infrastructure that allows developers to maintain full control over their data and user experience.",
    "target_markets": "Software Developers, SaaS Platforms, Marketplaces, Healthcare Portals",
    "employee_count": "Not publicly available",
    "funding_stage": "Not publicly available",
    "subcategory": "Scheduling Infrastructure"
  },
  "intentTags": {
    "problemIntents": [
      "In-house Custom Development: Developers manually building scheduling logic using database timestamps and custom logic.",
      "Development Agency: Hiring external React/TypeScript developers to build a custom booking engine."
    ],
    "solutionIntents": [
      "open source scheduling api",
      "self-hosted calendly alternative api",
      "headless booking engine infrastructure",
      "enterprise calendar sync for marketplaces",
      "white label scheduling api for developers",
      "Automation Workflows: Using a low-code tool like Zapier or Make to connect a form to a calendar."
    ],
    "evaluationIntents": []
  },
  "timestamp": 1777635621114
}