Yes, FrogClick is free with no signup, and it runs in your browser.

Do I need an account to play FrogClick?

No account or signup is required.

FrogClick - Click Speed Test (CPS)

Best 0.0 CPS

5.0seconds

0clicks

0.0cps

Click here as fast as you can

The timer starts on your first click. Mouse, trackpad, or tap - whatever clicks fastest.