Cal.diy

Cal.diy is a community edition of Cal.com, the scheduling platform, released as open source. It is a fork with all enterprise and commercial code removed, and the whole codebase is licensed under MIT with no proprietary Enterprise Edition split. It is built with TypeScript, Next.js, tRPC, Tailwind CSS and PostgreSQL through Prisma.

Compared with Cal.com, it drops enterprise features such as Teams, Organizations, Insights, Workflows and SSO/SAML, and it needs no license key or Cal.com account. Contributions go directly into this community-maintained project. No hosted service exists, so you run it yourself on infrastructure you control.

The maintainers warn that it is intended for personal, non-production use and that running it yourself demands solid skills in server administration, databases and protecting sensitive data. For commercial or enterprise needs they point to Cal.com instead. Cal.diy suits individuals and tinkerers who want complete control over their own scheduling setup.