Cog - System Info Viewer is a free Chrome add-on designed to provide users with detailed information about their system's hardware and network status. It utilizes Chrome's system APIs to deliver real-time data, including CPU temperatures, storage details, and display refresh rates, making it a valuable tool for users interested in monitoring their device's performance.

The app has undergone several updates to improve functionality, such as the addition of CPU temperature readings (available only on Chrome OS) and display mode refresh rates. Users can easily access this information through a user-friendly interface, which has been refined over multiple updates to enhance performance and reduce CPU usage. Cog is particularly useful for those who want to keep track of their system's health and performance metrics.