A simple and lightweight yet rock-solid plugin that blocks comment spam using multiple automatic detection methods.
Alternatives to Ninja Spam Protection
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.
Advanced, lightweight, GDPR-compliant anti-spam protection for WordPress comments. No setup required.
OpenPorte Spam Protectionv1.30.1
Stop spam without CAPTCHAs: a Proof-of-Work anti-spam check for your forms and logins. Open-source, self-hosted, privacy-first.
Block spam in Elementor, Contact Form 7, JetFormBuilder, Ninja Forms, WooCommerce and comments with keyword, link and email checks.
The best anti-spam protection to block spam comments and spam in a contact form. The most trusted antispam solution for WordPress and WooCommerce.
Modular dual-layer anti-spam protection for WordPress forms and comments with custom TLD and email filtering.
Apply a simple mathematical captcha to specific buttons by providing their CSS class or ID to prevent spamming.
JRT CommentShieldv1.0.0
Smart and AI-powered anti-spam protection for WordPress comments. Blocks bots and spam automatically, with optional ChatGPT-based detection.
The most complete free WordPress anti-spam plugin. Protects Contact Form 7, comments, login, registration, REST API, and XML-RPC — all in one shield.
CaptchaLav1.0.0
Smart privacy-first CAPTCHA for WordPress, WooCommerce, and 14+ form plugins. Mandatory server-token anti-replay.