GitHub Highlight Selected is a free Chrome add-on developed by Xhacker Liu. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This program aims to enhance the GitHub source view by allowing users to highlight selected words, similar to the functionality found in Sublime Text.

With GitHub Highlight Selected, users can easily identify and focus on specific words or pieces of code within the GitHub source view. This can be particularly useful when reviewing code or searching for specific elements within a large codebase. The add-on provides a seamless experience, improving the overall usability of GitHub for developers.