OctoLinker is the easiest and best way to navigate between files and projects on GitHub. It supports languages such as JavaScript, Ruby, Go, PHP, JAVA and more. It works with package.json as well as with Gemfiles. OctoLinker is trusted by over 30,000 developers and my most successful open source project so far.

Update: Due to recent changes in GitHub, OctoLinker is no longer functional. I managed to keep it running for 9 years despite various platform updates, but this latest change has made it impossible to maintain its functionality. Thank you to everyone who supported and used OctoLinker over the years. It has been an incredible journey, and I'm proud of what we've achieved together.

Pull Request Badges a GitHub App that lets you programatically insert badges in your pull request descriptions and then link them to anything. It was initially built to add a JIRA badge whenever a Pull Request is opened, is now a fully customizable service that can be used to present any information in a consistent way above the Pull Request description. Read how to automatically add links across all of your pull requests using Pull Request Badge.

Tentacle an Internal Developer Portal (IDP) like experience right on GitHub.

Jumpcat is a browser extension that brings you an alternative command palette to GitHub.

A categorized community-driven collection of awesome browser extensions for GitHub. The list is maintained by the community and updated daily.

The tool is still under development, but the Color Theme Explorer for Tailwind CSS is already working, and I use it myself whenever I do design work with Tailwind CSS.