Captcha Scripts

A Captcha is a challenge-response image or text field that is usually placed at the end of forms to ensure that submissions are not from bots. For more information, please refer to our php captcha scripts post.

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  • INSTANT DOWNLOAD(What's This?)

    This listing is part of the HotScripts Marketplace and is backed by the HotScripts Guarantee:

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    • 100% Open source code

    This script generates images (known as "Captcha's") which contain security codes used for protecting a form from spam bots. By encoding a 'password' inside an image and asking the user to re-enter what they see you can verify the user is a human and not

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  • This is simple, complete and powerfull captcha tool written in PHP for protecting your web FORMS from spammers. "Captcha ZDR" offers several methods of captcha protection, string protection, calculation protection (sum and deduction), noise in

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  • Securimage is an open-source free PHP CAPTCHA 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 to provide protection from spam bots. It can run on most

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  • BigBear Defence is simple to use for users with small knowledge of HTML and PHP. Settings are in separate files and all files needed are collected in a sub directory to keep it clean. Settings files allow changing colors, font, effects and size of

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  • SA captcha is a Simple and secure captcha that you can put it easily on your website.

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  • SPEEDCOIN CAPTCHA - PROTECTING AGAINST SPAM, PROTECTING YOUR FILES FROM DIRECT DOWNLOADS AND MONETISE YOUR WEBSITE. IT IS FREE! INSTALL CAPTCHA ON YOUR WEBSITE. It is a simple PHP/MySQL script which you can easily integrate into your own website in

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  • EM Captcha - Visual PHP captcha class from EM-Creations.co.uk EM Captcha is a simple and easy to implement PHP captcha class. Requirements: PHP version 5.4.0 or above GD Image Library and SQLite3 PHP Extentions

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  • This is one of the simplest php captcha script.

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  • Advanced CAPTCHA class which does not require any image processing extensions (GD/ImageMagick/etc). Developed to be readable by humans and resistant to OCR software. It generates black-and-white images with few distorted letters and noise. Checking

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  • Simple but effective php chaptcha, coded on php only, means it doesnt require javascript. It's a simple chaptcha but it can do the job very well.

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  • Drawings are universal way to represent real life objects. Even if they are distorted, they can be understood by children . But computers cannot recognize them as entities abstraction. This project is based on that concept, showing distorted drawings in

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  • PHP SHOW Firewall Versionï¼1.1.2 minor bug fixes and improvements. How to useï¼ 1. if ( is_file( "./firewall.php" ) ){require_once ("./firewall.php");} 2. change $_POST["str"]; to check($_POST["str"]); change $_GET["str"]; to

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  • PHP SHOW Monitor Versionï¼1.0 How to useï¼ modify config.php 1. visit m.php once is ok! 2. it is not necessary to keep it all the time! 3. the log is under Root directory codingï¼utf-8 it is

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  • This CAPTCHA uses pictures instead of characters. The user is invited to identify a picture (or pictures) to proceed. It can be used on any web form. It doesn't use a database. It is extremely simple to install with very minimal code. It stops

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  • 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. All you need to do is insert the php file as an

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  • HELLOCAPTCHA announces the new generation of CAPTCHAs (wikipedia.org/wiki/CAPTCHA). We are proud to introduce the most effective technology for human tests. Our CAPTCHAs are combining the most recent results of computer science and art. Our CAPTCHAs are

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  • This is one of the easiest CAPTCHA scripts you will ever use. While it doesnât obscure the text, it will serve its purpose well for many people who need a low-level CAPTCHA solution. This script requires little-to-no setup. The only dependency is the

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  • A Simple PHP Anti-Spam Captcha Script based on PHP/GD, to help prevent web robot from flooding your Comments, Guestbooks, Contact forms or any other online application susceptible to spam. One of the main Features of this script is that it alternates

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  • Unlike conventional CAPTCHA, Egglue generates CAPTCHA challenges that require only basic intuitive abilities to solve and visitors are free to use any words deemed fit. The distinct CAPTCHA challenges and layout cannot be handled by typical spam bots.

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  • An anti-spam form protection image written in PHP. Requirements: Unix, GD Libary

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