Source: https://seerepo.com/compare/denoland/deno/vs/vercel/next.js
Markdown source: https://seerepo.com/compare/denoland/deno/vs/vercel/next.js.md
Description: deno and next.js share 5 technologies: React, Tokio, image, tracing, and tracing-subscriber. deno is written in Rust and next.js in JavaScript.

# deno vs next.js

deno and next.js share 5 technologies: React, Tokio, image, tracing, and tracing-subscriber. deno is written in Rust and next.js in JavaScript.

- [denoland/deno](https://seerepo.com/r/denoland/deno): A modern runtime for JavaScript and TypeScript.
- [vercel/next.js](https://seerepo.com/r/vercel/next.js): The React Framework

## What they share and what sets them apart

- In common: React, Tokio, image, tracing, tracing-subscriber
- Only in deno: rusqlite, SQLite, tower, wgpu, crossterm, ed25519-dalek, hmac, keyring, argon2, hkdf, zip, plist, log, opentelemetry, tracing-opentelemetry, env_logger
- Only in next.js: Express, concurrent-queue, scheduler, Next.js, react-server-dom-webpack, styled-jsx, emotion, Tailwind CSS, PostCSS, geist, MUI, react-virtualized, Framer, Headless UI, @heroicons/react, Lucide, Cheerio, js-yaml, sharp, prop-types, Ajv, OpenTelemetry, pino, class-variance-authority, next-themes, tailwind-merge, Radix UI, cmdk, prompts, Sass

## Side by side

| | deno | next.js |
|---|---|---|
| Size | 1,217,015 lines written, 1,355 code files | 2,391,614 lines written, 5,697 code files |
| Who writes it | 2.4% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, and Codex | 0.8% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, and Devin |
| Activity | Last push October 29, 2026, 17,392 commits, 108,801 stars | Last push November 4, 2026, 36,392 commits, 143,262 stars |
| Tests | 4,394 test files. 6.1% 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, deno or next.js?

next.js, with 2,391,614 lines written; deno has 1,217,015.

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

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

next.js, with 143,262 stars; deno has 108,801.

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

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

next.js, with 18,587 test files; deno has 4,394.

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

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

next.js: its last push was on November 4, 2026, and deno's on October 29, 2026.

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

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

deno: an AI signed 2.4% of its commits, with Claude Code, GitHub Copilot, Cursor, and Codex; in next.js, 0.8%.

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

## Sources

- denoland/deno: Read on November 4, 2026, at commit e7b39eb (https://github.com/denoland/deno/tree/e7b39ebd55c85aaf6a29290c1f5a99e2e21e09dd)
- 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.