#1 super security anti-spam captcha plugin for WordPress forms.
All-in-one WordPress spam protection, with NO CAPTCHAs, challenge questions or other inconvenience to site visitors.
Aggressive anti-spam plugin that eliminates comment spam, trackback spam, contact form spam and registration spam. Protects against malicious attacks.
The plugin adds a No CAPTCHA reCAPTCHA tag in Contact Form 7, which can be used to include a No CAPTCHA reCAPTCHA anti-spam field.
Enhance your Gravity Forms to include anti-spam measures originally based on the work of David Walsh's "Zero Spam" technique.
WordPress plugin to fight with 450+ referrer spammers (like semalt, buttons-for-website and many more).
Email verification for all forms Woocommerce, Contact Form 7 etc. SMS and Mobile Verification for all forms. Enterprise grade. Active Support.
Stop spam bots from registering, logging in, filling out contact forms and commenting on your site without using annoying Captcha codes or puzzles.
Zero Spam makes blocking spam comments and registrations easy.
Notify a user about when he sent comment or form via Contact Form 7 and automatically blocked spammer IP by notifier users.
Easiness and effectiveness are the keys for a valid Captcha control. DC generates appealing captcha for your WP blog without compromising usability.
Prevent people from registering with emails that contain a subdomain to help reduce spam.
This plugin helps block bogus registrations by allowing a custom registration field and answer.