This is a useful script using CAPTCHA to make your PHP applications spam-proof. It takes seconds to install by simply including the Human Checker script on your page.
It stops your pages being spammed by requiring users to enter a numeric code that they copy from a PHP generated image.
Phoca CAPTCHA class is a small free class to show CAPTCHA image in your form. You can safe your form from Spam. You need PHP with GD library but you need not TTF support.
This script creates a random image captcha saves and locks the file containing the answer to it, then when it is submitted checks to make sure what the user entered and the image match. The answer is deleted after the check whether or not it is correct. This helps to prevent spam by scripts on your web forms. Script was developed by Howie at www.awarescripts.com.
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 spambots and the like because they cannot tell what a picture is of. Includes free, friendly support.
Image Validator is a GPL CAPTCHA php script to stop spam on any form: comment areas, sign-ups, shopping carts - any area of your website where you fear the evil spammers may target.
NEW VERSION!! A highly customizable PHP CAPTCHA image class for generating CAPTCHA images to prevent programs from filling out your forms. This does everything from create and output the image, to validate the code entered by the user in the form. It can show an image in just 3 lines of code, and validate the text in about 6 lines. This supports variable length codes, user defined character sets, custom TTF fonts, custom colors, multi-colored letters, skew lines through text, optional lines to obfuscate text, angled text, transparent text and more. Includes several examples.
Browserscan is a proxy and bot detection script. It evaluates the browser headers, and searches for inconsistencies. This allows the script to detect visitors who are not using a standard web browser.
The script recognizes all current PC and Mac browsers for most Operating Systems, as well as the most popular search engine crawlers and the W3C validator. Webmasters have the option of automatically banning violators or using simple logging for a case-by-case evaluation. Notifications can be enabled to send an email each time the script detects a suspicious visitor.
The admin panel allows webmasters to sort entries in the database, view detailed information about each violating visitor, view ARIN whois data, visit any associated websites, ban/unban, and delete entries.
This is basisbyte' s php Login script. A usefull little script which can be easily integrated into any existing site. Just add a bit of code to your files and pgls does the rest. It doesn't use sessions - it has its own security system: You can even secure more than one file if you need it for bigger admin areas. Just add a var to your links and you stay logged in while browsing your admin area. It can protect your site with 160 bit or 128 bit encryption, depending on your server, no userdata is saved as pure text (only encrypted) and you can define yourself how 'strong' the link is which is passed on when u use it to protect more than one file.
PHP Encoder provides a free encoder to protect your source code from unauthorized modification and alteration. Also contains information and reviews on commercial encoders.
Spider Trap is a freeware tool which ban bad webrobots and protect your site against domain grabbing. The script add automatically IP Adresses to the htaccess to deny access to your website for spiders which are not take care off the robots.txt.
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