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.
The most complete free WordPress anti-spam plugin. Protects Contact Form 7, comments, login, registration, REST API, and XML-RPC — all in one shield.
JRT CommentShieldv1.0.0
Smart and AI-powered anti-spam protection for WordPress comments. Blocks bots and spam automatically, with optional ChatGPT-based detection.
Modular dual-layer anti-spam protection for WordPress forms and comments with custom TLD and email filtering.
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.
Apply a simple mathematical captcha to specific buttons by providing their CSS class or ID to prevent spamming.
GhostTrapv1.0.3
Advanced 5-layer invisible spam protection for comments. No captcha, no user friction - professional spam blocking.