PS PHPCaptcha WPv1.2.0
Simple PHP-GD based captcha to replace tracking prone systems like Google recaptcha
Alternatives to Captcha Garb
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.
Stop comment spam, fake registrations and form bots with invisible behavioral verification — no puzzles, no checkboxes, zero PII.
Captcha Codev3.33
GDPR compatible captcha anti-spam protection for login form, comments form, registration form & lost password form. Eliminate spam with captcha.
Privacy CAPTCHA for Capv1.6.2
Privacy-friendly spam protection for comments, login, registration, WooCommerce, and Gravity Forms, powered by your own Cap server.
WP Sudoku Plusv2.2
This plugin displays a sudoku puzzle diagram on your website that the visitor can try to solve.
Invisible spam protection for comments and forms — no CAPTCHA, ever shown to visitors.
Stops spam in comments, registration, WooCommerce and contact forms. No CAPTCHA, no external services. Formerly WP Spam Protecter. Free.
Advanced antispam for comments, registrations & contact forms. No CAPTCHA, plus email validation and honeypot. We catch spam others miss!
Invisible behavioral spam filter for comments and forms. No CAPTCHA, no cookies, no external service. Pairs well with your anti-spam plugin.
Create customizable word guessing games and daily word puzzles in WordPress using your own words. Add multiple puzzles with shortcodes or a Gutenberg …