kaptcha is a modern version of the simple captcha project.
This repo is the clone of http://code.google.com/p/kaptcha/
<dependency>
<groupId>com.youkol.support.kaptcha</groupId>
<artifactId>kaptcha</artifactId>
<version>2.3.2</version>
</dependency>
Please see more information about this project.
http://code.google.com/p/kaptcha/
thanks.