Aimy Captcha-Less Form Guard PRO 20.0

Aimy Capture-Less Form Guard is a user friendly way to protect your forms from spam bots and therefore improves the security of your Joomla! website. The system plugin is a Captcha alternative that does not require user action: It uses some well known anti-spam tests to decide whether the user is a human or a machine on form submission.
Plugin for Joomla! 3 and 4.