pr-reactions is a free Chrome add-on developed by jsnjack. It falls under the category of browsers and specifically the subcategory of add-ons and tools. This add-on enhances the pull request list on github.com by adding pull request reactions.

One of the main features of pr-reactions is the ability to replace the "Issues" navigation item with "Assigned Issues". This allows users to easily navigate to their assigned issues directly from the pull request list. Additionally, the add-on enables word-wrap for code, making it easier to read and analyze code within pull requests.

Overall, pr-reactions is a useful tool for developers who frequently use GitHub for pull request management. It enhances the user experience by adding pull request reactions and improving navigation within the pull request list.