What is the best "captcha" for use within a struts framework?

Question

We need to integrate a good CAPTCHA into our CA Siteminder implementation. What is the best CAPTCHA for use with Struts? We've been looking at reCAPTCHA.

Answer 1

I've gotten good results using JCaptcha. They also happen to have a nice documentation page on Struts integration.

Answer 2

We've successfully used reCaptcha. There's a few things I like about reCaptcha

• It contributes back to the community by helping to digitize books
• You can customize the layout of the components to better fit your site
• You can use the default layout if you're in a hurry to get it implemented
• It includes the audio captcha for better website accessibility

I think the last point is important. I imagine that there are captcha libraries that do that for you but in case I'm wrong, reCaptcha has it already.