Protection against bots and spam traffic. Filter bad bots locally, or connect your BlockBots cloud account for real-time cloud-based bot detection.
Alternatives to KillBot
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
JRT CommentShieldv1.0.0
Smart and AI-powered anti-spam protection for WordPress comments. Blocks bots and spam automatically, with optional ChatGPT-based detection.
Professional security plugin protecting WordPress from malicious bots, spam, and server attacks using an advanced Web Application Firewall.
Mathlock Guardv2.0
Protects your site with a lightweight math CAPTCHA, requiring visitors to solve a simple question before accessing your content.
CaptchaCorev2.6.5
Bot protection without tracking, cookies or image puzzles. Proof of work and behavioural analysis, processed on servers in Germany.
CaptchaKitv1.0.1
Replace boring CAPTCHAs with fun 10-second mini-games. Bot protection that doesn't frustrate real users.
The most complete free WordPress anti-spam plugin. Protects Contact Form 7, comments, login, registration, REST API, and XML-RPC — all in one shield.
Checkout Origin Guardv1.8.0
One-page WooCommerce checkout hardening; bot blocking, rate/sequence checks, business/email heuristics, and optional AVS-based risk signals.
TrustSig Securityv1.8.6
Stops bots, spam and brute-force attacks on your WordPress forms. No CAPTCHA, no account, no keys. Activate it and you are protected.
Blocks scripted checkout attempts that never loaded your checkout page, including card testing bots that skip CAPTCHA. Classic and block checkout.