Source: https://seerepo.com/compare/parcel-bundler/parcel/vs/vercel/next.js
Markdown source: https://seerepo.com/compare/parcel-bundler/parcel/vs/vercel/next.js.md
Description: parcel and next.js share 5 technologies: React, Tailwind CSS, image, tracing, and PostCSS. parcel is written in Rust and next.js in JavaScript.

# parcel vs next.js

parcel and next.js share 5 technologies: React, Tailwind CSS, image, tracing, and PostCSS. parcel is written in Rust and next.js in JavaScript.

- [parcel-bundler/parcel](https://seerepo.com/r/parcel-bundler/parcel): The zero configuration build tool for the web. 📦🚀
- [vercel/next.js](https://seerepo.com/r/vercel/next.js): The React Framework

## What they share and what sets them apart

- In common: React, Tailwind CSS, image, tracing, PostCSS
- Only in parcel: lightningcss, cssparser, anstyle, html5ever, xml5ever, markdown, oxipng, log, Less, posthtml, Pug, Stylus, sugarss
- Only in next.js: Express, concurrent-queue, Tokio, scheduler, Next.js, react-server-dom-webpack, styled-jsx, emotion, geist, MUI, react-virtualized, Framer, Headless UI, @heroicons/react, Lucide, Cheerio, js-yaml, sharp, prop-types, Ajv, tracing-subscriber, OpenTelemetry, pino, class-variance-authority, next-themes, tailwind-merge, Radix UI, cmdk, prompts, Sass

## Side by side

| | parcel | next.js |
|---|---|---|
| Size | 141,200 lines written, 239 code files | 2,391,614 lines written, 5,697 code files |
| Who writes it | 2.5% of its commits signed by AI. With Claude Code, Codex, and Gemini CLI | 0.8% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, and Devin |
| Activity | Last push November 4, 2026, 4,005 commits, 44,014 stars | Last push November 4, 2026, 36,392 commits, 143,262 stars |
| Tests | 1,603 test files. 25.1% of its code files have a test that imports them | 18,587 test files. 6.5% 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, parcel or next.js?

next.js, with 2,391,614 lines written; parcel has 141,200.

The proof: [vercel/next.js's code at commit 97f1a2c](https://github.com/vercel/next.js/tree/97f1a2c8a1deb23cf03855d67f942c0fe3ded1ce)

### Which has more GitHub stars, parcel or next.js?

next.js, with 143,262 stars; parcel has 44,014.

The proof: [vercel/next.js on GitHub](https://github.com/vercel/next.js)

### Which has more tests, parcel or next.js?

next.js, with 18,587 test files; parcel has 1,603.

The proof: [vercel/next.js's code at commit 97f1a2c](https://github.com/vercel/next.js/tree/97f1a2c8a1deb23cf03855d67f942c0fe3ded1ce)

### Which was updated more recently, parcel or next.js?

Both got their last push on November 4, 2026.

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

### Which has more commits signed by AI, parcel or next.js?

parcel: an AI signed 2.5% of its commits, with Claude Code, Codex, and Gemini CLI; in next.js, 0.8%.

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

## Sources

- parcel-bundler/parcel: Read on November 6, 2026, at commit 0256839 (https://github.com/parcel-bundler/parcel/tree/0256839dee32fcca0a0cfd72f48e70ab757fa8ec)
- vercel/next.js: Read on November 4, 2026, at commit 97f1a2c (https://github.com/vercel/next.js/tree/97f1a2c8a1deb23cf03855d67f942c0fe3ded1ce)

## 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.