Source: https://seerepo.com/compare/codewhale-hq/Codewhale/vs/jj-vcs/jj
Markdown source: https://seerepo.com/compare/codewhale-hq/Codewhale/vs/jj-vcs/jj.md
Description: Codewhale and jj share 6 technologies: Tokio, crossterm, Ratatui, ansi-to-tui, tracing, and tracing-subscriber. Both are written in Rust.

# Codewhale vs jj

Codewhale and jj share 6 technologies: Tokio, crossterm, Ratatui, ansi-to-tui, tracing, and tracing-subscriber. Both are written in Rust.

- [codewhale-hq/Codewhale](https://seerepo.com/r/codewhale-hq/Codewhale): Open-source agent for the terminal written in Rust. Use any provider or model. Issues & PRs always welcome
- [jj-vcs/jj](https://seerepo.com/r/jj-vcs/jj): A Git-compatible VCS that is both simple and powerful

## What they share and what sets them apart

- In common: Tokio, crossterm, Ratatui, ansi-to-tui, tracing, tracing-subscriber
- Only in Codewhale: axum, rusqlite, SQLite, lru, objc2-foundation, MCP, @deepseek-ai/cordis, Jetpack Compose, lifecycle-runtime-compose, Next.js, React, Stripe, console, jsonwebtoken, keyring, oauth2, rmcp, image, htmd, yaml-rust2, qrcode, schemars, jsonschema, @deepseek-ai/schemastery, js-yaml, Tailwind CSS, @opennextjs/cloudflare
- Only in jj: clru, sapling-renderdag, rpassword, tracing-chrome

## Side by side

| | Codewhale | jj |
|---|---|---|
| Size | 1,797,226 lines written, 1,778 code files | 284,964 lines written, 313 code files |
| Who writes it | 41.2% of its commits signed by AI. With Claude Code, Codex, Devin, Cursor, GitHub Copilot, Jules, Gemini CLI, and Factory | 0.1% of its commits signed by AI. With Gemini CLI and Claude Code |
| Activity | Last push November 6, 2026, 11,474 commits, 41,158 stars | Last push November 7, 2026, 12,142 commits, 32,392 stars |
| Tests | 558 test files. 41.8% of its code files have a test that imports them | 128 test files |

- 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, Codewhale or jj?

Codewhale, with 1,797,226 lines written; jj has 284,964.

The proof: [codewhale-hq/Codewhale's code at commit 8963aee](https://github.com/codewhale-hq/Codewhale/tree/8963aee5c4b1addce54026eff550d6ec29429002)

### Which has more GitHub stars, Codewhale or jj?

Codewhale, with 41,158 stars; jj has 32,392.

The proof: [codewhale-hq/Codewhale on GitHub](https://github.com/codewhale-hq/Codewhale)

### Which has more tests, Codewhale or jj?

Codewhale, with 558 test files; jj has 128.

The proof: [codewhale-hq/Codewhale's code at commit 8963aee](https://github.com/codewhale-hq/Codewhale/tree/8963aee5c4b1addce54026eff550d6ec29429002)

### Which was updated more recently, Codewhale or jj?

jj: its last push was on November 7, 2026, and Codewhale's on November 6, 2026.

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

### Which has more commits signed by AI, Codewhale or jj?

Codewhale: an AI signed 41.2% of its commits, with Claude Code, Codex, Devin, Cursor, GitHub Copilot, Jules, Gemini CLI, and Factory; in jj, 0.1%.

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

## Sources

- codewhale-hq/Codewhale: Read on November 6, 2026, at commit 8963aee (https://github.com/codewhale-hq/Codewhale/tree/8963aee5c4b1addce54026eff550d6ec29429002)
- jj-vcs/jj: Read on November 7, 2026, at commit 7fdb0d1 (https://github.com/jj-vcs/jj/tree/7fdb0d1088f3592e73e31967b21322ef2299ce85)

## 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.