4,090 courses in 159 subjects, 20,628 sections, 20,386 with open seats. Every course page lists each section with its instructor, time and live seat count, and takes a free seat alert.
Live seat counts, instructors and meeting times. Pick a section and we'll email you the moment a seat opens; no app or account needed.
Get it on your phone too: the iPhone app adds instant push alerts.
From Purdue's public class search, checked every few minutes while anyone is watching a section. ClassMaxx is not affiliated with Purdue.