Mr. Stalker is a Chrome add-on developed by AnonySharma. It falls under the category of Browsers and is categorized as an Add-ons & Tools subcategory. This tool is designed to help users save nicknames for Codeforces handles, enabling them to avoid confusion.

With Mr. Stalker, users can assign custom names to Codeforces handles, which will then be displayed alongside the handles whenever a Codeforces page is opened. This feature allows users to quickly identify and remember the individuals behind the handles, making it easier to navigate and interact within the Codeforces community.

By providing a simple and convenient way to save and display custom names for Codeforces handles, Mr. Stalker enhances the user experience and helps to foster a more personalized and engaging environment on the Codeforces platform.