cal.diy vs rybbit

cal.diy and rybbit share 18 technologies: Next.js, Postgres, Redis, Stripe, React, kysely, Zod, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, Framer, Radix UI, Lucide, @hookform/resolvers, tailwind-merge, cmdk, and react-day-picker. Both are written in TypeScript.

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What they share and what sets them apart

calcom

cal.diy

Scheduling infrastructure for absolutely everyone.

TypeScript49.9kRead on November 10, 2026, at commit 2eb48ecWhat is cal.diy built with?

Only in cal.diy

In common

rybbit-io

rybbit

🐸 Rybbit - open-source and privacy-friendly alternative to Google Analytics that is 10x more intuitive.

TypeScript13.3kRead on November 10, 2026, at commit 4288204What is rybbit built with?

Only in rybbit

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
cal.diy554,567 lines written4,285 code files
rybbit297,531 lines written1,245 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
cal.diy6.3% of its commits signed by AIWith Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot
rybbit5.6% of its commits signed by AIWith Claude Code, GitHub Copilot, CodeRabbit, and Cursor
ActivityFrom GitHub and its history, on the day SeeRepo read it.
cal.diyLast push November 3, 202616,069 commits49,876 stars
rybbitLast push November 4, 20262,699 commits13,256 stars
TestsThe files that test the code, and the share of code files a test imports.
cal.diy644 test files14.8% of its code files have a test that imports them
rybbit327 test files32.9% of its code files have a test that imports them

Frequently asked questions

Which is bigger, cal.diy or rybbit?
cal.diy, with 554,567 lines written; rybbit has 297,531.

The proof: calcom/cal.diy's code at commit 2eb48ec

Which has more GitHub stars, cal.diy or rybbit?
cal.diy, with 49,876 stars; rybbit has 13,256.

The proof: calcom/cal.diy on GitHub

Which has more tests, cal.diy or rybbit?
cal.diy, with 644 test files; rybbit has 327.

The proof: calcom/cal.diy's code at commit 2eb48ec

Which was updated more recently, cal.diy or rybbit?
rybbit: its last push was on November 4, 2026, and cal.diy's on November 3, 2026.

The proof: rybbit-io/rybbit's commits on GitHub

Which has more commits signed by AI, cal.diy or rybbit?
cal.diy: an AI signed 6.3% of its commits, with Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot; in rybbit, 5.6%.

The proof: the commits each tool signed in calcom/cal.diy

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