Octotree

Octotree is a browser extension that transforms your GitHub experience by adding a collapsible, IDE-style file tree sidebar to any repository page. Instead of clicking through endless folders to understand a project's structure, you get a familiar tree view that lets you jump to any file instantly. It works on both public and private repositories, making it a practical tool for daily development work.

The extension stands out with features specifically designed for GitHub workflows. It offers tree-based file search to locate items quickly, custom icon themes and code fonts for visual customization, and dedicated tools for pull requests. You can see all changed files and comments in a PR at a glance, and use omnibookmarks to save important files or lines of code for later. The sidebar can also be docked to either side of your browser for a layout that suits you.

This tool is a clear win for software developers who regularly read or review code on GitHub. It saves significant time for open-source contributors exploring new projects, team members conducting code reviews on pull requests, and engineers who need to quickly navigate large, complex codebases. The free version covers the essentials, while a Pro subscription unlocks advanced features like unlimited bookmarks and support for GitHub Enterprise.