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ui vs next.js

ui and next.js share 11 technologies: React, Next.js, Tailwind CSS, class-variance-authority, next-themes, Radix UI, cmdk, Lucide, PostCSS, geist, and prompts. ui is written in TypeScript and next.js in JavaScript.

Read it as markdown

What they share and what sets them apart

shadcn-ui

ui

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

TypeScript127.3kRead on November 4, 2026, at commit 8a35366What is ui built with?
vercel

next.js

The React Framework

JavaScript143.3kRead on November 4, 2026, at commit 97f1a2cWhat is next.js built with?

In common

Only in ui

  • lru-cache
  • Vercel
  • MCP
  • React Router
  • Vite
  • TanStack
  • cn
  • recharts
  • Base UI
  • sonner
  • react-resizable-panels
  • embla-carousel-react
  • react-day-picker
  • dnd-kit
  • motion
  • vaul
  • React Hook Form
  • hugeicons
  • @tabler/icons-react
  • @phosphor-icons/react
  • @remixicon/react
  • ai
  • @ai-sdk/react
  • shiki
  • streamdown
  • unist-util-visit
  • Zod
  • tailwindcss-animate
  • ora

Only in next.js

  • Express
  • concurrent-queue
  • Tokio
  • scheduler
  • react-server-dom-webpack
  • styled-jsx
  • emotion
  • MUI
  • react-virtualized
  • Framer
  • Headless UI
  • @heroicons/react
  • Cheerio
  • js-yaml
  • image
  • sharp
  • prop-types
  • Ajv
  • tracing
  • tracing-subscriber
  • OpenTelemetry
  • pino
  • tailwind-merge
  • Sass

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
ui636,496 lines written3,892 code files
next.js2,391,614 lines written5,697 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.
ui3% of its commits signed by AIWith Claude Code, Cursor, GitHub Copilot, Codex, and Devin
next.js0.8% of its commits signed by AIWith Claude Code, Cursor, GitHub Copilot, and Devin
ActivityFrom GitHub and its history, on the day SeeRepo read it.
uiLast push November 4, 20262,298 commits127,326 stars
next.jsLast push November 4, 202636,392 commits143,262 stars
TestsThe files that test the code, and the share of code files a test imports.
ui415 test files3.8% of its code files have a test that imports them
next.js18,587 test files6.5% of its code files have a test that imports them

Frequently asked questions

Which is bigger, ui or next.js?
next.js, with 2,391,614 lines written; ui has 636,496.

The proof: vercel/next.js's code at commit 97f1a2c

Which has more GitHub stars, ui or next.js?
next.js, with 143,262 stars; ui has 127,326.

The proof: vercel/next.js on GitHub

Which has more tests, ui or next.js?
next.js, with 18,587 test files; ui has 415.

The proof: vercel/next.js's code at commit 97f1a2c

Which was updated more recently, ui or next.js?
Both got their last push on November 4, 2026.

The proof: vercel/next.js's commits on GitHub

Which has more commits signed by AI, ui or next.js?
ui: an AI signed 3% of its commits, with Claude Code, Cursor, GitHub Copilot, Codex, and Devin; in next.js, 0.8%.

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

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