#55th of 19 in Code review and testing
hunk
Terminal diff viewer for reviewing code changes, with inline agent notes
Documentation ↗
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- Stars
- 9.7k
- License
- MIT
- Last commit
- Oct 2026
- Last release
- Oct 2026
- Language
- TypeScript
336 on 3 Apr 20269,670 on 23 Oct 2026
From GitHub's daily star counts.
Checked on GitHub.
Overview
Hunk is an interactive terminal diff viewer built on OpenTUI and Pierre diffs. It opens Git, Jujutsu and Sapling changes, GitHub pull requests, raw patches from stdin, or two files, in a multi-file stream with a sidebar. A coding agent can use the hunk-review skill to attach notes to a live session, and they show beside the code.
Who it is for: Developers who review diffs or agent-written changes in the terminal
Ranked among open-source alternatives to CodeRabbit (#5 of 10).
Strengths
- Opens Git, Jujutsu and Sapling changes, plus GitHub PRs via bundled `hunk gh` with no gh CLI
- Works as a pager for git, jj and Sapling, and reads patches from stdin
- Standalone binary via install script, Homebrew, mise or Nix; no Node.js needed
- Extension API and embeddable OpenTUI diff component (`hunkdiff/opentui`)
Weaknesses
- No structural diffing; the README's own comparison table marks it as missing
- No prebuilt binaries for Windows arm64 or musl Linux such as Alpine
- GitHub Enterprise is not supported
- Extension API is experimental and may break between minor releases
What it needs
- no GPU
- Needs Git (recommended), Node.js 22+ (npm install only), GH_TOKEN or GITHUB_TOKEN (private repos)
Quick answers
Is hunk open source?
Yes. Its code is on GitHub under the MIT license.
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