diffity

A GitHub-style diff viewer for reviewing code changes locally. It works alongside AI coding tools such as Claude Code, Cursor and Codex.

Share on XLicense: MIT

Overview

Diffity is a diff viewer and code review tool that looks like GitHub's. You run it inside a git repo and your browser opens a syntax-highlighted diff of your changes. It is not tied to one AI tool, so Claude Code, Cursor, Codex and other coding agents can review the diff and leave comments that you or the agent can then resolve.

Key features

  • Diff uncommitted work, commits, branches or tags
  • Agents review code and comment on the diff
  • Browse project files and comment on any file
  • Pull down a GitHub PR, review locally, push comments back
  • Run in several repos at once, each on its own port

Best for

Developers who write code with AI agents and want a familiar diff view for local review. It installs globally with npm.

Upstream
nilbuild/diffity
Fork on GitHub
Guo-astro/diffity
Upstream stars
779
Category
Developer tools and infrastructure
Language
TypeScript
License
MIT
Forked
2026-03-22
Sync status
In syncLast synced 2026-09-29