Grades Chrome Extension, developed by Oxy8, is a free browser add-on falling under the category of Browsers, specifically Add-ons & Tools. This extension, named Base Level Extension, allows users to select classes to generate schedules in the UFRGS system. It aims to streamline the process of organizing class timetables for students.

One notable feature of the Grades Chrome Extension is its ability to customize schedules by choosing specific classes, providing a convenient way for users to plan their academic calendar efficiently. However, it lacks a mechanism to detect overlapping schedules between classes of the same course, which could be a potential area for improvement.