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|  |  | Cryptographp is a PHP script to generate captchas for form protection. Cryptographp limits automated robot spam on various forms. It exists stand alone or as a plugin for Wordpress, Symfony, and more. Code: PHP 4.0 |
| | | HKCaptcha is a PHP captcha implementation script that allows you to protect valuable forms on your site from spam intrusion. The images are cluttered to make letter glyph segmentation extremely difficult. Code: PHP 4.0 |
| | | Captcha Verification is a form security script for your site. It generates random numbers and/or letters and produces them inside an image using the GD Library in PHP. Stop spam on your site and protect your confidentiality.
Code: PHP 4.0 |
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| | | Captcha Creator is a powerful and complete PHP Captcha Script that generates Captcha Images. It is easy to install on any web hosting accounts and it is very customizable and easy to configure. Code: PHP 5.0 |
| | | Captcha ZDR is a simple, complete, and powerful captcha tool written in PHP
for protecting your web forms from spammers. It is released under the GPL license. Features noise in images, 8 unique backgrounds, and much more. Code: PHP 4.0 |
| | | Encaps Captcha is easy to read symbols by human and automated CAPTCHA processor software, but hard to process the image by computer because common CAPTCHA processors can't understand which one of the output symbols it must ignore! Code: PHP 4.0 |
Idut Human Checker is a useful script that you can include in your PHP applications. It stops your pages being spammed by requiring users to enter a numeric code that they copy from a PHP generated image. Code: PHP 4.0 |
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AnimatedCaptcha makes spam protection simple for users while maintaining the highest level of security against spam bots.
Code: PHP 4.0 |
Micro Captcha is a simple PHP script which generates captcha images to prevent spam form submissions. The script generates random images with a security code for you. Installation and usage is very simple. Code: PHP 4.0 |
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