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Get NullCaptcha

Invisible Spam Stopping Technology


Null (adjective): of, being, or relating to zero

Spam is annoying. But so are captcha codes and robot challenges that hinder the experience of your website visitors. NullCaptcha is spam-prevention technology that eliminates the need for annoying security captcha codes and spam challenges. NullCaptcha is a RESTful service that works with any website and any platform to implement spam protection on web forms easily. NullCaptcha is free to use for low-traffic websites, and offers low-pricing and customized pricing options for high-traffic websites and web applications.


How It Works



Join our collective against spam.

Sign Up
Configure your websites with instructions from our "Get Started" section.
Put an end to spam; all spam goes is collected to help track and put an end to spam networks across the world.

Spam Attempts Intercepted


9,094