Automating(Breaking) captcha using Selenium Webdriver

Usually most of the companies either use their own captchas or one of the third party captchas(Google, jQuery plugins) in the user registration page of their sites .So these pages can't be automated fully.Infact Captcha itself is implemented to prevent automation. As per official captcha site

A CAPTCHA is a program that  protects  websites against bots  by generating and grading tests that humans can pass but current computer programs cannot.

Captchas are not brakeable but there are some third party captchas that can be breakable and one of the example for it is "jQuery Real Person" captcha . Here is the documentation  :)

Here is the sample code to brake the "jQuery Real Person" Captcha using Selenium WebDriver.

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

public class captchaAutomtion { 
 
 WebDriver driver;
 
 @BeforeTest
 public void start(){
  driver = new FirefoxDriver();
 }
 
 @Test
 public void Test(){ 
  //Loading jQuery Real Person Captcha demonstration page
  driver.get("http://keith-wood.name/realPerson.html");
  JavascriptExecutor js = (JavascriptExecutor) driver;
  //Setting the captcha values
  js.executeScript("document.getElementsByName('defaultRealHash')[0].setAttribute('value', '-897204064')");
  driver.findElement(By.name("defaultReal")).sendKeys("QNXCUL");
  //Submit the form
  driver.findElement(By.xpath(".//*[@id='default']/form/p[2]/input")).submit(); 
 }

}

Do share some of the captcha plugins that can be breakable with me :P