Who Deleted Me - Unfriend Finder is a Firefox extension designed to monitor your Facebook friend list. This tool notifies users when friends are deleted or deactivate their accounts, providing insights into changes within their social circle. Additionally, it alerts users when new friends are added, ensuring they stay updated on their connections. The application falls under the Social & Communication category, making it a useful tool for active Facebook users who want to keep track of their friendships.

The extension operates with a user-friendly interface that allows for easy navigation and management. It is available for free, making it accessible to a wide audience. By utilizing this tool, users can effortlessly maintain awareness of their online relationships, which can enhance their social experience on Facebook.