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Captcha PHP
Captcha PHP is a PHP class library that works without cookies....
Authen::Captcha
Authen::Captcha is a Perl extension for creating captcha's to verify the human element in transactions....
extension perl Perl extension human element element transactions
Captcha::reCAPTCHA
A Perl implementation of the reCAPTCHA API...
django-simple-captcha
A very simple, yet powerful, Django captcha application...
django-math-captcha
Simple, secure math captcha for Django forms...
eBayCaptcha Populator
eBayCaptcha Populator automatically fills the verification code for you....
Authen::PluggableCaptcha
Authen::PluggableCaptcha is a pluggable Captcha framework for Perl....
framework Perl module pluggable Captcha authentication class
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9kw Client
This restartless add-on for Firefox provides a captcha service with lots of features...
Recaptcha4j
Recaptcha4j is a library to work with recaptcha's implementation of a CAPTCHA API....
Authen::PluggableCaptcha::Tutorial
Authen::PluggableCaptcha::Tutorial contains a tutorial about how to use the Captcha System....
dm.KittenAuth
dm.KittenAuth package implements a CAPTCHA validation solution using groups of images and associated questions....
as_snipercaptcha
as_snipercaptcha is a PHP class that can be used to implement CAPTCHA validation....
recaptcha-client
A plugin for reCAPTCHA and reCAPTCHA Mailhide...
Captcha reCAPTCHA Mailhide reCAPTCHA plugin reCAPTCHA client reCAPTCHA
supercaptcha
Captcha field for Django new forms...
kaptcha
kaptcha project is a modern version of the SimpleCaptcha project....
Captcha SimpleCaptcha clone produce captcha security code kaptcha