Open source repo

What's inside calcom/cal.diy

calcom/cal.diy is a TypeScript repo with 554,251 lines written in 4,310 files. cal.diy is built with Next.js and React and uses Postgres, Redis, Sentry, and 3 more. AI signed 6.3% of the 16,059 commits of cal.diy.

Its description on GitHub: “Scheduling infrastructure for absolutely everyone.”

TypeScriptMIT49,471

Read on October 28, 2026, at commit 56da01b.

What the card proved: what it’s built with on the left, what it uses on the right.

See each one with its proof

Its folders

In figures

lines written
554,251
The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
files
4,310
The product’s, not counting tests.
test files
641
The files that test the code.

SeeRepo read its code facts-only: no AI, and none of its code is kept.

Frequently asked questions

What is calcom/cal.diy?
calcom/cal.diy is a TypeScript repo with 554,251 lines written in 4,310 files. Its description on GitHub: “Scheduling infrastructure for absolutely everyone.”
The proof: its page on GitHub
What is cal.diy built with?
cal.diy is built with Next.js and React and uses Postgres, Redis, Sentry, and 3 more.
The proof: each technology with its file and line
How much of cal.diy did AI write?
AI signed 6.3% of the 16,059 commits of cal.diy.
The proof: the commits each tool signed
What license does cal.diy have?
cal.diy is released under the MIT license.
The proof: its page on GitHub
How many stars does cal.diy have on GitHub?
cal.diy had 49,471 stars on GitHub on October 28, 2026.
The proof: its page on GitHub

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