reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.


FeedCaptcha is described as 'New captcha system, easy to integrate and with meaning for your product. You create a set of questions that users answers in order to pass the captcha, so you can use it to test features of your product while protecting your form' and is an app. There are more than 10 alternatives to FeedCaptcha for a variety of platforms, including Web-based, Self-Hosted, SaaS, PHP and JavaScript apps. The best FeedCaptcha alternative is reCAPTCHA, which is free. Other great apps like FeedCaptcha are hCaptcha, UniqPin, Mollom and Sblam!.
reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.


Mollom is a freemium web service to get rid of spam, unwanted content and fake users on your Drupal, Wordpress and Joomla site or blog.
MTCaptcha is a smart captcha service that prioritizes privacy and accessibility. It offers an adaptive invisible noCaptcha that is easy for humans but hard for bots, making verification frictionless. MTCaptcha is GDPR and WCAG compliant, ensuring that your data is never sold or...




GeeTest protects your websites, mobile apps and APIs from bad bot attacks with zero user friction. Its self-learning defense model based on Graph Convolutional Networks and massive volumes of biometric data collected in the past 7 years allows GeeTest to identify and mitigate...






Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and bots. Download our free CAPTCHA security software today.




The Arkose Labs platform undermines the economic drivers behind fraud until perpetrators are compelled to abandon attacks. Real-time risk classification of traffic with interactive enforcement challenges, the solution defeats automated attacks...
