UWaterloo Undergrad Calendar Checklist is a Chrome extension developed by pl3lee. This tool falls under the Browsers category, specifically in Add-ons & Tools. The extension allows users to input their courses and visually track their program requirements. By entering course information into the input box, the relevant courses in the undergrad calendar are highlighted in green, aiding in easy tracking of completed requirements.

Moreover, users can conveniently manage duplicates by unchecking checkboxes manually. This extension caters to users of both the new UWaterloo Undergrad Calendar and the old UWaterloo Undergrad Calendars, providing flexibility and utility for a wider range of users.