Source: https://seerepo.com/compare/PrefectHQ/prefect/vs/shadcn-ui/ui
Markdown source: https://seerepo.com/compare/PrefectHQ/prefect/vs/shadcn-ui/ui.md
Description: prefect and ui share 14 technologies: Vite, React, Tailwind CSS, class-variance-authority, next-themes, sonner, React Hook Form, Radix UI, recharts, react-day-picker, dnd-kit, cmdk, Lucide, and Zod. prefect is written in Python and ui in TypeScript.

# prefect vs ui

prefect and ui share 14 technologies: Vite, React, Tailwind CSS, class-variance-authority, next-themes, sonner, React Hook Form, Radix UI, recharts, react-day-picker, dnd-kit, cmdk, Lucide, and Zod. prefect is written in Python and ui in TypeScript.

- [PrefectHQ/prefect](https://seerepo.com/r/PrefectHQ/prefect): Prefect is a workflow orchestration framework for building resilient data pipelines in Python.
- [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, Tailwind CSS, class-variance-authority, next-themes, sonner, React Hook Form, Radix UI, recharts, react-day-picker, dnd-kit, cmdk, Lucide, Zod
- Only in prefect: FastAPI, aiosqlite, Redis, Postgres, SQLite, starlette, uvicorn, AIOHTTP, Ray, @tanstack/react-router, Vue, vue-router, Rich, SQLAlchemy, alembic, azure-identity, cryptography, jinja2, Pydantic, jsonschema, OpenTelemetry, docker, prometheus-client, boto3, tailwind-merge, tanstack, @uiw/react-codemirror, codemirror, GSAP, Mermaid, @radix-ui/react-icons, react-markdown, rehype-raw, rehype-sanitize, remark-gfm, @hookform/resolvers
- Only in ui: Next.js, lru-cache, Vercel, MCP, React Router, TanStack, cn, Base UI, react-resizable-panels, embla-carousel-react, motion, vaul, hugeicons, @tabler/icons-react, @phosphor-icons/react, @remixicon/react, ai, @ai-sdk/react, shiki, streamdown, unist-util-visit, tailwindcss-animate, PostCSS, geist, prompts, ora

## Side by side

| | prefect | ui |
|---|---|---|
| Size | 945,152 lines written, 2,114 code files | 636,496 lines written, 3,892 code files |
| Who writes it | 9.7% of its commits signed by AI. With Devin, Claude Code, Codex, GitHub Copilot, and Cursor | 3% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, Codex, and Devin |
| Activity | Last push November 4, 2026, 18,695 commits, 24,112 stars | Last push November 4, 2026, 2,298 commits, 127,326 stars |
| Tests | 1,242 test files. 26.9% 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, prefect or ui?

prefect, with 945,152 lines written; ui has 636,496.

The proof: [PrefectHQ/prefect's code at commit 60d9ea5](https://github.com/PrefectHQ/prefect/tree/60d9ea54535ee10be2e7481fd1d930815c87b649)

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

ui, with 127,326 stars; prefect has 24,112.

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

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

prefect, with 1,242 test files; ui has 415.

The proof: [PrefectHQ/prefect's code at commit 60d9ea5](https://github.com/PrefectHQ/prefect/tree/60d9ea54535ee10be2e7481fd1d930815c87b649)

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

Both got their last push on November 4, 2026.

The proof: [PrefectHQ/prefect's commits on GitHub](https://github.com/PrefectHQ/prefect/commits)

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

prefect: an AI signed 9.7% of its commits, with Devin, Claude Code, Codex, GitHub Copilot, and Cursor; in ui, 3%.

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

## Sources

- PrefectHQ/prefect: Read on November 4, 2026, at commit 60d9ea5 (https://github.com/PrefectHQ/prefect/tree/60d9ea54535ee10be2e7481fd1d930815c87b649)
- 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.