Source: https://seerepo.com/compare/rrweb-io/rrweb/vs/shadcn-ui/ui
Markdown source: https://seerepo.com/compare/rrweb-io/rrweb/vs/shadcn-ui/ui.md
Description: rrweb and ui share 4 technologies: Vite, React, PostCSS, and TanStack. Both are written in TypeScript.

# rrweb vs ui

rrweb and ui share 4 technologies: Vite, React, PostCSS, and TanStack. Both are written in TypeScript.

- [rrweb-io/rrweb](https://seerepo.com/r/rrweb-io/rrweb): record and replay the web
- [shadcn-ui/ui](https://seerepo.com/r/shadcn-ui/ui): Composable, accessible components with thoughtful defaults. Build your own component library with code you can customize, extend, and make your own.

## What they share and what sets them apart

- In common: Vite, React, PostCSS, TanStack
- Only in rrweb: Svelte, react-router-dom, idb, cssom, Chakra UI, react-icons
- Only in ui: Next.js, lru-cache, Vercel, MCP, React Router, Tailwind CSS, cn, class-variance-authority, next-themes, recharts, Radix UI, Base UI, sonner, react-resizable-panels, embla-carousel-react, react-day-picker, cmdk, dnd-kit, motion, vaul, React Hook Form, Lucide, hugeicons, @tabler/icons-react, @phosphor-icons/react, @remixicon/react, ai, @ai-sdk/react, shiki, streamdown, unist-util-visit, Zod, tailwindcss-animate, geist, prompts, ora

## Side by side

| | rrweb | ui |
|---|---|---|
| Size | 57,233 lines written, 103 code files | 636,496 lines written, 3,892 code files |
| Who writes it | 1.2% of its commits signed by AI. With Claude Code and GitHub Copilot | 3% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, Codex, and Devin |
| Activity | Last push November 5, 2026, 1,386 commits, 20,352 stars | Last push November 4, 2026, 2,298 commits, 127,326 stars |
| Tests | 176 test files. 39.8% of its code files have a test that imports them | 415 test files. 3.8% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, rrweb or ui?

ui, with 636,496 lines written; rrweb has 57,233.

The proof: [shadcn-ui/ui's code at commit 8a35366](https://github.com/shadcn-ui/ui/tree/8a3536678a528cc012b9e62484290e79d0be410f)

### Which has more GitHub stars, rrweb or ui?

ui, with 127,326 stars; rrweb has 20,352.

The proof: [shadcn-ui/ui on GitHub](https://github.com/shadcn-ui/ui)

### Which has more tests, rrweb or ui?

ui, with 415 test files; rrweb has 176.

The proof: [shadcn-ui/ui's code at commit 8a35366](https://github.com/shadcn-ui/ui/tree/8a3536678a528cc012b9e62484290e79d0be410f)

### Which was updated more recently, rrweb or ui?

rrweb: its last push was on November 5, 2026, and ui's on November 4, 2026.

The proof: [rrweb-io/rrweb's commits on GitHub](https://github.com/rrweb-io/rrweb/commits)

### Which has more commits signed by AI, rrweb or ui?

ui: an AI signed 3% of its commits, with Claude Code, Cursor, GitHub Copilot, Codex, and Devin; in rrweb, 1.2%.

The proof: [the commits each tool signed in shadcn-ui/ui](https://seerepo.com/r/shadcn-ui/ui/ai)

## Sources

- rrweb-io/rrweb: Read on November 5, 2026, at commit 59506da (https://github.com/rrweb-io/rrweb/tree/59506da1f3082a6a538dae0df1ea681693e8c791)
- shadcn-ui/ui: Read on November 4, 2026, at commit 8a35366 (https://github.com/shadcn-ui/ui/tree/8a3536678a528cc012b9e62484290e79d0be410f)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.