Source: https://seerepo.com/compare/rust-lang/mdBook/vs/vectordotdev/vector
Markdown source: https://seerepo.com/compare/rust-lang/mdBook/vs/vectordotdev/vector.md
Description: mdBook and vector share 5 technologies: axum, Tokio, handlebars, tracing, and tracing-subscriber. Both are written in Rust.

# mdBook vs vector

mdBook and vector share 5 technologies: axum, Tokio, handlebars, 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
- [vectordotdev/vector](https://seerepo.com/r/vectordotdev/vector): A high-performance observability data pipeline.

## What they share and what sets them apart

- In common: axum, Tokio, handlebars, tracing, tracing-subscriber
- Only in mdBook: html5ever, pulldown-cmark, listenfd
- Only in vector: aws-sdk-s3, sqlx-postgres, tokio-postgres, Redis, lru, MongoDB, aws-sdk-kinesis, opendal, Postgres, sqlx, Kafka, AWS S3, tower, warp, Tailwind CSS, crossterm, Ratatui, indicatif, aws-sdk-sts, azure_identity, parquet, quick-xml, csv, jsonschema, metrics, azure_core, log, tracing-core, aws-sdk-iam

## Side by side

| | mdBook | vector |
|---|---|---|
| Size | 20,533 lines written, 66 code files | 472,373 lines written, 1,238 code files |
| Who writes it | 0.1% of its commits signed by AI. With Codex | 0.9% of its commits signed by AI. With Claude Code, Cursor, and GitHub Copilot |
| Activity | Last push November 2, 2026, 2,281 commits, 22,266 stars | Last push November 4, 2026, 14,656 commits, 22,799 stars |
| Tests | 73 test files. 10.6% of its code files have a test that imports them | 242 test files. 28% 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 vector?

vector, with 472,373 lines written; mdBook has 20,533.

The proof: [vectordotdev/vector's code at commit 1bac1b8](https://github.com/vectordotdev/vector/tree/1bac1b840fd5071a35cb8a1c66a857c3a555c9ca)

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

vector, with 22,799 stars; mdBook has 22,266.

The proof: [vectordotdev/vector on GitHub](https://github.com/vectordotdev/vector)

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

vector, with 242 test files; mdBook has 73.

The proof: [vectordotdev/vector's code at commit 1bac1b8](https://github.com/vectordotdev/vector/tree/1bac1b840fd5071a35cb8a1c66a857c3a555c9ca)

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

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

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

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

vector: an AI signed 0.9% of its commits, with Claude Code, Cursor, and GitHub Copilot; in mdBook, 0.1%.

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

## Sources

- rust-lang/mdBook: Read on November 5, 2026, at commit 7fb5bc8 (https://github.com/rust-lang/mdBook/tree/7fb5bc8ee83366ba5170d1f303e74b1151f32731)
- vectordotdev/vector: Read on November 4, 2026, at commit 1bac1b8 (https://github.com/vectordotdev/vector/tree/1bac1b840fd5071a35cb8a1c66a857c3a555c9ca)

## 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.