Anti spam module by CleanTalk to protect your Drupal sites from spam bot registration and spam comments publications thru comment and contact forms.
Invisible antispam without CAPTCHA, questions, puzzles, counting animals, math and etc. Just install and forget.
CleanTalk is a SaaS spam protection service for Web-sites.
CleanTalk uses protection methods which are invisible for site visitors.
Using CleanTalk eliminates needs in CAPTCHA, questions and answers, and other methods of protection, complicating the exchange of information on the site.