Seriously a life saver for USC students -- I wish the school's employed developers were this inventive.
The USC Schedule Helper is a browser extension that integrates with the university's class registration system to provide features such as showing available seats, professor ratings, and the ability to export the calendar
It also offers functionalities like email and text notifications for seat availability
The plugin's website description indicates its association with JonLuca's Blog, which focuses on tech, programming, and finance