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 struggling with difficult puzzles, users enter a simple brand message or security phrase.
Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and ...
A negative captcha has the exact same purpose as your run-of-the-mill image captcha: To keep bots from submitting forms. Image ...
What Does NoMoreCaptchas Do? NoMoreCaptchas stops bots that try to register and log in to websites, leave spam comments on blo ...
reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. About 200 million CAPTC ...
UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect a human or a computer oper ...
Mollom is a freemium web service to get rid of spam, unwanted content and fake users on your Drupal, Wordpress and Joomla site ...
visualCaptcha is a configurable captcha solution, focusing on accessibility & simplicity, whilst maintaining security. It' ...