Source: https://seerepo.com/compare/rust-lang/mdBook/vs/zed-industries/zed
Markdown source: https://seerepo.com/compare/rust-lang/mdBook/vs/zed-industries/zed.md
Description: mdBook and zed share 7 technologies: axum, Tokio, handlebars, html5ever, pulldown-cmark, tracing, and tracing-subscriber. Both are written in Rust.

# mdBook vs zed

mdBook and zed share 7 technologies: axum, Tokio, handlebars, html5ever, pulldown-cmark, tracing, and tracing-subscriber. Both are written in Rust.

- [rust-lang/mdBook](https://seerepo.com/r/rust-lang/mdBook): Create book from markdown files. Like Gitbook but implemented in Rust
- [zed-industries/zed](https://seerepo.com/r/zed-industries/zed): Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.

## What they share and what sets them apart

- In common: axum, Tokio, handlebars, html5ever, pulldown-cmark, tracing, tracing-subscriber
- Only in mdBook: listenfd
- Only in zed: tower, aws-sdk-s3, lru, Postgres, sqlx, AWS S3, GitHub, gpui, gpui_tokio, smol, objc2-foundation, objc2-app-kit, tiny_http, core-services, swash, gpui_platform, accesskit, wgpu, objc2-quartz-core, objc2-ui-kit, x11rb, core-graphics, wayland-client, taffy, xkbcommon, console, cosmic-text, dialoguer, jsonwebtoken, rpassword, markdown, image, quick-xml, linkify, plist, resvg, ttf-parser, schemars, jsonschema, log, env_logger

## Side by side

| | mdBook | zed |
|---|---|---|
| Size | 20,533 lines written, 66 code files | 1,835,785 lines written, 1,779 code files |
| Who writes it | 0.1% of its commits signed by AI. With Codex | 0.5% of its commits signed by AI. With Claude Code, Amp, Factory, GitHub Copilot, Codex, Cursor, and Gemini CLI |
| Activity | Last push November 2, 2026, 2,281 commits, 22,266 stars | Last push November 4, 2026, 37,547 commits, 92,679 stars |
| Tests | 73 test files. 10.6% of its code files have a test that imports them | 140 test files. 18.1% 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, mdBook or zed?

zed, with 1,835,785 lines written; mdBook has 20,533.

The proof: [zed-industries/zed's code at commit e21ff1b](https://github.com/zed-industries/zed/tree/e21ff1b368b074586e4dae0d9bbf15d5dd8a1476)

### Which has more GitHub stars, mdBook or zed?

zed, with 92,679 stars; mdBook has 22,266.

The proof: [zed-industries/zed on GitHub](https://github.com/zed-industries/zed)

### Which has more tests, mdBook or zed?

zed, with 140 test files; mdBook has 73.

The proof: [zed-industries/zed's code at commit e21ff1b](https://github.com/zed-industries/zed/tree/e21ff1b368b074586e4dae0d9bbf15d5dd8a1476)

### Which was updated more recently, mdBook or zed?

zed: its last push was on November 4, 2026, and mdBook's on November 2, 2026.

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

### Which has more commits signed by AI, mdBook or zed?

zed: an AI signed 0.5% of its commits, with Claude Code, Amp, Factory, GitHub Copilot, Codex, Cursor, and Gemini CLI; in mdBook, 0.1%.

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

## Sources

- rust-lang/mdBook: Read on November 5, 2026, at commit 7fb5bc8 (https://github.com/rust-lang/mdBook/tree/7fb5bc8ee83366ba5170d1f303e74b1151f32731)
- zed-industries/zed: Read on November 4, 2026, at commit e21ff1b (https://github.com/zed-industries/zed/tree/e21ff1b368b074586e4dae0d9bbf15d5dd8a1476)

## 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.