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Recal.dev
Like Resend, but for everything Calendars & Scheduling
# API Design
Featured on : Sep 27. 2025
Featured on : Sep 27. 2025
What is Recal.dev?
Skip months of integration hell. Use our SDK or open source scheduling package to handle everything calendar, simplify OAuth, build robust booking systems, integrate Google, Outlook, and other calendars with one unified API... 51M+ events created.
Problem
Users need to integrate multiple calendar services (Google, Outlook) individually, which is time-consuming and complex. months of integration hell, manage multiple APIs separately
Solution
Scheduling API tool that unifies calendar integrations. Users can integrate Google, Outlook, and other calendars via one API, handle OAuth, and build booking systems with SDK/open-source package.
Customers
Developers and engineering teams building apps requiring scheduling features, such as SaaS platforms, productivity tools, or booking systems.
Unique Features
Unified API for all major calendars, pre-built OAuth handling, open-source package for customization, scalable event management (51M+ events created).
User Comments
Saves months of development time
Simplifies calendar integrations
Robust API documentation
Supports high-volume event scheduling
Reduces OAuth complexity
Traction
51M+ events created
Listed on ProductHunt with direct comparisons to Resend (a popular email API)
Open-source package adoption indicates developer traction
Market Size
Global appointment scheduling software market valued at $4.7 billion in 2023, growing at 12.3% CAGR (Grand View Research).