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ui vs novu

ui and novu share 16 technologies: React, Next.js, Tailwind CSS, class-variance-authority, next-themes, tailwind-merge, Radix UI, react-day-picker, sonner, cmdk, react-phone-number-input, react-resizable-panels, Lucide, Zod, Base UI, and motion. Both are written in TypeScript.

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What they share and what sets them apart

cosscom

ui

coss.com/ui is the official design system of Cal.com

TypeScript10.8kRead on November 13, 2026, at commit fe6ffa8What is ui built with?

Only in ui

In common

novuhq

novu

The open-source communication infrastructure for agents and products

TypeScript40.3kRead on November 13, 2026, at commit cb58333What is novu built with?

Only in novu

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
ui160,398 lines written1,547 code files
novu1,243,881 lines written8,316 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.
ui6.2% of its commits signed by AIWith Devin, Cursor, and Claude Code
novu8.5% of its commits signed by AIWith Cursor, Claude Code, Devin, GitHub Copilot, and CodeRabbit
ActivityFrom GitHub and its history, on the day SeeRepo read it.
uiLast push November 9, 20261,057 commits10,841 stars
novuLast push November 13, 202616,810 commits40,337 stars
TestsThe files that test the code, and the share of code files a test imports.
ui9 test files0.6% of its code files have a test that imports them
novu1,319 test files16.6% of its code files have a test that imports them

Frequently asked questions

Which is bigger, ui or novu?
novu, with 1,243,881 lines written; ui has 160,398.

The proof: novuhq/novu's code at commit cb58333

Which has more GitHub stars, ui or novu?
novu, with 40,337 stars; ui has 10,841.

The proof: novuhq/novu on GitHub

Which has more tests, ui or novu?
novu, with 1,319 test files; ui has 9.

The proof: novuhq/novu's code at commit cb58333

Which was updated more recently, ui or novu?
novu: its last push was on November 13, 2026, and ui's on November 9, 2026.

The proof: novuhq/novu's commits on GitHub

Which has more commits signed by AI, ui or novu?
novu: an AI signed 8.5% of its commits, with Cursor, Claude Code, Devin, GitHub Copilot, and CodeRabbit; in ui, 6.2%.

The proof: the commits each tool signed in novuhq/novu

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