cal.diy vs 9router

cal.diy and 9router share 7 technologies: Next.js, React, @next/third-parties, Tailwind CSS, bcryptjs, jose, and marked. cal.diy is written in TypeScript and 9router in JavaScript.

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What they share and what sets them apart

calcom

cal.diy

Scheduling infrastructure for absolutely everyone.

TypeScript49.7kRead on November 5, 2026, at commit 2eb48ecWhat is cal.diy built with?

Only in cal.diy

In common

decolua

9router

Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Auto-fallback, RTK -40% tokens, never hit limits.

JavaScript32.1kRead on November 7, 2026, at commit 1fe586bWhat is 9router built with?

Only in 9router

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
cal.diy554,567 lines written4,308 code files
9router242,297 lines written1,093 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
9router29.4% of its commits signed by AIWith Cursor, Claude Code, OpenHands, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
cal.diyLast push November 3, 202616,069 commits49,716 stars
9routerLast push October 28, 20261,476 commits32,071 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
9router434 test files30.1% of its code files have a test that imports them

Frequently asked questions

Which is bigger, cal.diy or 9router?
cal.diy, with 554,567 lines written; 9router has 242,297.

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

Which has more GitHub stars, cal.diy or 9router?
cal.diy, with 49,716 stars; 9router has 32,071.

The proof: calcom/cal.diy on GitHub

Which has more tests, cal.diy or 9router?
cal.diy, with 644 test files; 9router has 434.

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

Which was updated more recently, cal.diy or 9router?
cal.diy: its last push was on November 3, 2026, and 9router's on October 28, 2026.

The proof: calcom/cal.diy's commits on GitHub

Which has more commits signed by AI, cal.diy or 9router?
9router: an AI signed 29.4% of its commits, with Cursor, Claude Code, OpenHands, and GitHub Copilot; in cal.diy, 6.3%.

The proof: the commits each tool signed in decolua/9router

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