elcodedocle/captchalot
Captcha image generator/validator RESTful web service
时间：2014-10-26 22:34
techvirtual/cool-php-captcha
This is a very cool package!
时间：2014-10-13 13:53
magkopian/php-math-captcha
A simple class for generating and validating math captcha images
时间：2014-10-04 15:01
recaptcha/php5-v2
A properly coded PHP 5 reCaptcha class that will allow you to interact with Google's reCaptcha API.
时间：2014-09-24 10:10
xrow/xrowcaptcha-ls
Accessible logical captcha technolgy that can protect all your forms automaticly without the need of modifing code.
时间：2014-08-22 14:24
derky/sortablescaptcha
Sortables Captcha Extension for phpBB 3.3. This captcha plugin allows you to add questions and provide answers in two separate columns. An user will see all the answers in one column and has to drag some answers to the other column to successfully complete the captcha.
时间：2014-08-13 10:57
recaptcha-lib/recaptcha
PHP Library for reCAPTCHA Google's API
时间：2014-06-06 06:51
cakedc/recaptcha
Recaptcha Plugin for CakePHP
时间：2014-05-09 12:11
mdmsoft/yii2-captcha
Captcha with math equation
时间：2014-04-18 14:32