Skip to main content
Back to All Projects
Enterprise SaaS Verified Architecture

Cal.com - Open Source Scheduling

The open-source enterprise scheduling infrastructure demonstrating how to build a highly scalable B2B SaaS using the T3 stack. It features a robust monorepo architecture, tRPC for end-to-end type safety, and PostgreSQL managed by Prisma for complex relational data.

120 Stars 35 Forks

Core Technologies & Frameworks

Next.jstRPCPrismaPostgreSQLTailwind CSS

Technical Architecture & Specifications

## Architecture Overview Cal.com is the open-source enterprise scheduling infrastructure. It demonstrates how to build a highly scalable, enterprise-grade B2B SaaS application using the modern T3 stack. ### Key Architectural Highlights - **Monorepo Structure**: Uses Turborepo to manage multiple apps and packages, sharing UI components and database schemas effectively. - **API Layer**: Utilizes tRPC for end-to-end typesafe APIs, ensuring the frontend and backend are always in sync. - **Database**: PostgreSQL managed by Prisma ORM, allowing for complex relational data queries needed for scheduling logic and team management.
Reviewed by DevTechPulse Editorial Board

All listed blueprints, repositories, and case studies are verified against public documentation and LTS container environments. For inquiries or updates, view our Editorial Policy.