cal.com open source analysis
Scheduling infrastructure for absolutely everyone.
Project overview
⭐ 39571 · TypeScript · Last activity on GitHub: 2026-01-06
Why it matters for engineering teams
Cal.com addresses the common challenge of integrating flexible, customisable scheduling features into web applications. It offers a production ready solution that is particularly valuable for backend engineers and full stack developers working within teams that require robust appointment booking capabilities. Built with TypeScript and leveraging modern frameworks like Next.js and Prisma, it ensures reliability and scalability in production environments. The project suits teams looking for an open source tool for engineering teams that want control over their scheduling infrastructure without relying on third-party services. However, it may not be the right choice for projects needing a lightweight or minimal scheduling feature, as its comprehensive feature set can introduce additional complexity.
When to use this project
Cal.com is a strong choice when your team needs a self hosted option for scheduling that integrates deeply with your existing stack and supports complex workflows. Teams should consider alternatives if they require a simpler, out-of-the-box solution without customisation or if they prefer a fully managed service to reduce maintenance overhead.
Team fit and typical use cases
Backend engineers and full stack developers benefit most from Cal.com, using it to build and maintain scheduling systems embedded in SaaS products or enterprise applications. It is commonly employed in scenarios where teams need a production ready solution that supports custom authentication, database integration, and UI customisation. This open source tool for engineering teams allows for seamless integration with modern TypeScript stacks, making it ideal for teams prioritising control and extensibility.
Topics and ecosystem
Activity and freshness
Latest commit on GitHub: 2026-01-06. Activity data is based on repeated RepoPi snapshots of the GitHub repository. It gives a quick, factual view of how alive the project is.