Alternatives to UniqPin for all platforms with any license

  • reCAPTCHA

    reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. About 200 million CAPTCHAs are solved by humans around the...

    Free Web

    No features added Add a feature

    reCAPTCHA icon
  • visualCaptcha

    A configurable captcha solution, focusing on accessibility & simplicity whilst maintaining security.

    Free Open Source Self-Hosted GitHub

    visualCaptcha icon
    • Discontinued As from Dec 26, 2016: Please note visualCaptcha is no longer actively developed. It still works and should continue to, but it won't be improved by the initial team anymore. ... Source: https://github.com/emotionLoop/visualCaptcha/blob/master/README.md
  • Mollom

    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.

    Freemium Web

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  • Solve Media's CAPTCHA TYPE-IN™

    Solve Media's CAPTCHA TYPE-IN ads are an easy plug-in solution that saves your users time while making your site more secure and more profitable. Instead of...

    Commercial Web

    No features added Add a feature

    Solve Media's CAPTCHA TYPE-IN™ icon
  • Securimage

    Securimage is a script for generating complex images and CAPTCHA codes to protect forms from spam and abuse. It can be easily added into existing forms on your website...

    Free Open Source Web

    No features added Add a feature

  • Sblam!

    Open-source implementation of server-side spam filtering of blog comments and forum posts. It's available as a free web service. It's open source, so you can...

    Free Open Source Linux Web

    No features added Add a feature

    Sblam! icon
  • FunCaptcha

    FunCaptcha is another Captcha software, but it has something more to it. No more "Write this into the box" captchas! These are Fun captchas!.

    Free Web

    No features added Add a feature

    FunCaptcha icon
  • Negative Captcha

    A plugin to make the process of creating a negative captcha in Rails much less painful.

    Free Open Source Self-Hosted

    No features added Add a feature

    Negative Captcha icon

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