Skt NURCaptcha
NURCaptcha inserts a reCAPTCHA on the Register Form of your site to protect it against…
Merki viðbótar: spambots
PRyC WP: AntiSPAM (without CAPTCHA)
Block SPAM without any type of CAPTCHA – plugin add "HoneyTrap" (and a few other…
ThreatPoint Email Validator
This plugin validates email in realtime using live connections and aggregated data, by leveraging the…