Human Presence – Stop Form Spam Withou...
Kratos Anti Spam
LH Zero Spam
WP Referrer Spam Blacklist (fight 2040+ ...
Super Simple SPAM Stopper
ValidShapes CAPTCHA
Super CAPTCHA Security Suite – Har...
JBlog Captcha
BuddyPress No Captcha ReCaptcha
DNS-anti-spam
Security Captcha
Defender
IceCaptcha
WP Spam Fighter
Pictcha
Email Validator
Spam Statistics
SidXSpam
Chinese Comment Spam Protection
SpamTrap
Headwinds
BuddyPress XProfile Validate With RegEx
Double Opt Contact Form 1.2.3
WP-Mail-Validator
Verelo Blog Monitoring Plugin
Hidden Captcha
MetaCAPTCHA
Spam Notifier
