GitHub: Sticky header is a Chrome add-on developed by Jeroen Visser. It is a free tool that makes the GitHub menu bar sticky, allowing users to easily navigate through the website.

With GitHub: Sticky header, users no longer have to scroll all the way up to access the GitHub header. This add-on keeps the header fixed at the top of the page, making it convenient for users who frequently work with long pull requests or need quick access to the menu.

By making the GitHub header sticky, this add-on improves the user experience and saves time by eliminating the need for excessive scrolling. It is a simple yet effective tool for GitHub users who want to enhance their workflow.