Focused system for building software with agents
Reviewer is an agentic development environment for engineers who deeply care about the quality of their work.
Works with Claude Code Codex and any agent that runs skills.
Comment, then hand it off
Leave a comment on any line, then assign it to an agent to pick up and fix.
Review diffs your way
Toggle between split and unified views. When a hunk isn't enough context, open the whole file.
Work with Claude Code and Codex from the same interface
Use popular harnesses directly in Reviewer, or use skills to connect to any harness you have on your machine.
Run your services in one click
Set up your local services once from a macOS widget and start them with a single click. Ruby, NPM, Docker or any other development service you use.
Intuitive Git integration
Create new branches, and let Reviewer write the commit message from what actually changed.
Know what changed, and when
Filter the history by author, date or branch. Click any entry to see what changed and when, or open a single file's history to follow how it got to where it is.
Follow a code symbol to its source
Language server protocol integration for TypeScript, Swift, Ruby and PHP. Hover a symbol for its signature and docs, or find every usage of it across the codebase.
Terminal
A built-in terminal for ad hoc work, right next to the code.
Light and dark
Follows your Mac, or pick the appearance you prefer.
Themes
Shiki and Pierre themes to make the environment your own.
Native to the Mac
Built for Apple silicon macOS 26 and later.
Recently shipped
Read the changelog- Clicking Reviewer's Dock icon brings the window back when it's minimised, not only clicking the minimised window itself.0.0.43
- In the terminal UI, ⌃G and the palette's Generate commit message work from any page, as in the Mac app. Away from the commit box, the message is drafted from every change and waits in Review's commit box.0.0.42
- In the terminal UI, clicking the History, Usages, Run or Pull request tab no longer shrinks the bottom pane by a row each time.0.0.41
- Install Reviewer's terminal UI on macOS or Linux in one line:
curl -fsSL https://reviewer.sh/install | bash. It installs into~/.reviewerwith the Reviewer server and the Node.js it runs on, andreviewer upgradeinstalls the latest release.0.0.40 - The sessions list's filter narrows to a saved workspace, or to one repository whether you opened it alone or inside a workspace, in place of a project. Each choice shows how many sessions it holds.0.0.39
- In a workspace, moving to another repository keeps the page you're on instead of jumping to the first open tab. It shows that repository's own tab, or nothing if it has none.0.0.38
FAQ
- Is it free?
- The Mac app and the terminal app are free and MIT-licensed, and they stay that way. Reviewer Cloud will be a paid service.
- Does my code leave my machine?
- Reviewer works locally on your machine. It orchestrates GitHub and your locally installed agents, so your code never reaches Reviewer's servers.
- Which agents work with it?
- Claude Code and Codex run inside the Mac app. Any other agent can pick up your comments with the resolve-reviewer-comments skill.
- Where does the terminal app run?
- On macOS or Linux, on your laptop or on a server over SSH. curl -fsSL https://reviewer.sh/install | bash installs it with everything it needs. If you also use the Mac app, they share your comments.
- What does the Mac app need?
- An Apple silicon Mac on macOS 26 or later. There's no Intel build.
- What's Reviewer Cloud going to be?
- Reviewer Cloud is going to focus on making you and your team more productive through isolated cloud sandboxes. Join the waitlist to hear when it opens.
- Who isn't it for?
- If you run 100 parallel agents and don't check their work, then Reviewer is not for you. Reviewer is designed for engineers who care about their work deeply and verify it before shipping.