RankShield — Ranking & Ad-Spend Attack Protection

The most complete free WordPress anti-spam plugin. Protects Contact Form 7, comments, login, registration, REST API, and XML-RPC — all in one shield.

Stops bots, spam and brute-force attacks on your WordPress forms. No CAPTCHA, no account, no keys. Activate it and you are protected.

The KillBot plugin for WordPress uses the external KillBot service to protect websites from bots and automated traffic.

Protects websites and ad campaigns from bots, competitors, and invalid traffic using a remote click fraud detection service.

Math CAPTCHA for CF7, WPForms, and any HTML form. Zero config — install, add shortcode or use auto inject from settings.

Privacy-friendly CAPTCHA solution with bot score. Protect your website from bot attacks and spam with our invisible and GDPR-compliant reCAPTCHA alter …