Selecting CAPTCHA Service - free or otherwise

[htmlmasterdave]

The main requirements are that it supports ASP.Net integration and that it be accessible (audio option and alt-text for buttons, etc.)

reCAPTCHA is interesting, but I'm concerned about security and reliablity... from what I understand by reading their documentation, when you submit a request to have a user's input validated, you transfer both your public and private key used to "secure" everything in plain text... hopefully I'm wrong, but that's what I gather, and if that's the case I don't see how it's secure at all.

I'm also interested in any solutions that let you host your own service.

 

[Markbnj]

I don't recall the specifics but I added an ASP captcha module to a forum I used to host a few years back. As I recall there were several free ones at that time.

 

[htmlmasterdave]

I've really only found two so far that have audio and ASP.Net integration... reCAPTCHA and captchas.net.

Do you know of any that are downloadable? (e.g. not a service)

 

[troytime]

i see reCaptcha being used all over the place, even by some pretty major websites.

i'm not a fan of ANY captcha system really.

 

[htmlmasterdave]

Originally posted by: troytime
i see reCaptcha being used all over the place, even by some pretty major websites.

i'm not a fan of ANY captcha system really.

Yeah neither am I, I've read quite a bit that suggests they are basically useless, and arguably worse than that, since they might stop some users from being able to access your site.

(I have to select one though for work )