Mollom is shutting down, what are the alternatives?

Mollom has reached its End of Life. 2bits blogs about an alternative, antibot.

The recommended alternative by Acquia is a combination of reCAPTCHA and Honeypot.

But there is a problem with this combinationa: reCAPTCHA, like all modules that depend on the CAPTCHA module, disable the page cache for any form that has CAPTCHA enabled.


Another alternative that we have been using that does not disable the page cache is antibot module.