Free Spacebar CPS Test — the web's most accurate spacebar clicker test. Measure your clicks per second in 1, 5, 10, 30 or 60 seconds, track your best 1-second burst, and compete on the leaderboard.
Good breakdown of the difference between burst and sustained CPS — I think a lot of people chase peak numbers without realizing consistency matters more in an actual fight. I've been testing my spacebar speed too, not just mouse clicks, using https://spacebarcpstest.com/ — interesting to see how much the two differ for me personally. Might be worth a mention if you ever cover keyboard-based techniques alongside mouse clicking.