WHO ASKED is a Chrome extension designed to enhance the LeetCode experience by providing users with free access to premium insights. This tool allows users to view company-tagged coding problems without needing a LeetCode Premium subscription, making it easier for aspiring developers to prepare for interviews at top tech companies. The extension features real-time notifications, alerting users about which companies have requested specific problems, which can guide their preparation effectively.

In addition to company-specific insights, WHO ASKED includes a comprehensive dashboard that enables users to browse problems by various companies, including major players like Google, Amazon, and Microsoft. Users can track their progress by marking problems as solved and can add personal notes for future reference. The extension also offers a difficulty filter, allowing users to sort problems by Easy, Medium, or Hard, thus tailoring their practice sessions to their skill level.