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Zero vs ui

Zero and ui share 22 technologies: React, React Router, Vite, MCP, Tailwind CSS, class-variance-authority, next-themes, sonner, Radix UI, motion, React Hook Form, dnd-kit, recharts, cmdk, input-otp, react-day-picker, react-resizable-panels, vaul, Lucide, ai, streamdown, and Zod. Both are written in TypeScript.

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What they share and what sets them apart

Mail-0

Zero

Experience email the way you want with Mail0 – the first open source email app that puts your privacy and safety first. Join the discord: https://mail0.link/discord

TypeScript10.9kRead on November 13, 2026, at commit 3613273What is Zero built with?

Only in Zero

In common

shadcn-ui

ui

Composable, accessible components with thoughtful defaults. Build your own component library with code you can customize, extend, and make your own.

TypeScript127.9kRead on November 12, 2026, at commit dd41d19What is ui built with?

Only in ui

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
Zero91,712 lines written441 code files
ui636,360 lines written3,888 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.
Zero0.6% of its commits signed by AIWith CodeRabbit, Devin, and Claude Code
ui2.9% of its commits signed by AIWith Claude Code, Cursor, GitHub Copilot, Codex, and Devin
ActivityFrom GitHub and its history, on the day SeeRepo read it.
ZeroLast push October 27, 20262,805 commits10,886 stars
uiLast push November 11, 20262,309 commits127,941 stars
TestsThe files that test the code, and the share of code files a test imports.
Zero62 test files16.6% of its code files have a test that imports them
ui415 test files3.8% of its code files have a test that imports them

Frequently asked questions

Which is bigger, Zero or ui?
ui, with 636,360 lines written; Zero has 91,712.

The proof: shadcn-ui/ui's code at commit dd41d19

Which has more GitHub stars, Zero or ui?
ui, with 127,941 stars; Zero has 10,886.

The proof: shadcn-ui/ui on GitHub

Which has more tests, Zero or ui?
ui, with 415 test files; Zero has 62.

The proof: shadcn-ui/ui's code at commit dd41d19

Which was updated more recently, Zero or ui?
ui: its last push was on November 11, 2026, and Zero's on October 27, 2026.

The proof: shadcn-ui/ui's commits on GitHub

Which has more commits signed by AI, Zero or ui?
ui: an AI signed 2.9% of its commits, with Claude Code, Cursor, GitHub Copilot, Codex, and Devin; in Zero, 0.6%.

The proof: the commits each tool signed in shadcn-ui/ui

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