Simple Calendar Extension is a free Chrome add-on developed by matofesi. As the name suggests, it is a simple calendar extension that displays an icon in the browser toolbar. When clicked, it opens a current month calendar with the option to switch between months and years.

The extension provides a straightforward and easy-to-use interface for users to quickly view the calendar without the need to navigate to a separate website or application. It is a convenient tool for those who frequently need to check dates or plan their schedules. With its minimalistic design, Simple Calendar Extension focuses on providing the essential features of a calendar without any unnecessary distractions or clutter.

Overall, Simple Calendar Extension is a useful and efficient Chrome add-on for anyone looking for a straightforward calendar tool. It offers a convenient way to view and navigate through the calendar directly from the browser toolbar.