GH Repository · calcom
cal.diy
Scheduling infrastructure for absolutely everyone.
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node/yarnnodeopen-sourcetypescriptnext-authpostgresqltailwindcssdockernextjst3-stackprismaTypeScripttrpcturborepozodother
cal.diy is an open-source scheduling infrastructure project from the calcom GitHub organization, described as 'Scheduling infrastructure for absolutely everyone.' The codebase is built with the T3 stack — Next.js, TypeScript, tRPC, NextAuth, Prisma and PostgreSQL — with Tailwind CSS, Zod and Turborepo, and ships AI-assistant config files (agents.md, claude-md, claude-dir, cursor-rules).
You want a self-hostable, open-source scheduling platform built on a well-known TypeScript stack, licensed under MIT.
Use it to
- Self-host a scheduling service
- Study a production T3-stack codebase
- Extend scheduling infrastructure with your own features
- Use the shipped agents.md and cursor-rules for AI-assisted development
- Deploy via the included Docker and Node/Yarn toolchain
For Developers wanting open-source scheduling infrastructure
- Role
- other
- Language
- TypeScript
- Licence
- MIT
- Forks
- 15,131
- Open issues
- 1,134
- Last push
- 2026-09-14
- Latest release
- v1.0 · 2021-09-21
topicsschedulingopen-sourcenextjstypescriptt3-stackself-hosted