McMaster RateMyProf is a free Chrome add-on developed by Ahmed Sabah. It seamlessly integrates into McMaster University's MyTimetable, providing students with clear insights into professors while choosing their courses.

With McMaster RateMyProf, students can make informed decisions by accessing instant color-coded ratings next to professor names. The add-on also offers tooltips that provide additional information about professors, including their overall rating, difficulty level, percentage of students who would take the professor again, total number of ratings, and a direct link to the professor's RateMyProfessors profile.

This add-on requires no setup and can be toggled on and off as needed. It is completely free to use. Please note that McMaster RateMyProf is not affiliated with McMaster University or RateMyProfessors, so it is advisable to consider both professor reviews and the number of ratings for accurate assessments.

Contact the developer by clicking "Contact the developer" if you encounter any issues while using the add-on.