Protect login and registration forms from spam bots using Google reCAPTCHA, Cloudflare Turnstile, and Math Captcha.
Alternatives to R2K Security Captcha (for reCAPTCHA Enterprise & Cloudflare Turnstile)
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.
Hide and manage external download and redirect URLs behind customizable buttons and a clean titanium.download endpoint.
Login Security Captchav1.9.5
Secure WordPress login, registration, and comment form with Google reCAPTCHA or Cloudflare Turnstile. Prevent Brute-force attacks and more.
Cloudusk Captchav0.0.1
Cloudusk Captcha provides a lightweight, developer-friendly CAPTCHA integration for WordPress sites.
Shielda CAPTCHAv1.0.0
Official Shielda CAPTCHA plugin to protect WordPress, WooCommerce, and WPForms against automated bots, brute-force attacks, and spam.
Power Captcha reCAPTCHAv1.2.0
Protect WordPress/WooCommerce/Contact Form 7 forms from spam, brute-force attacks, fake comments, accounts, or registrations with Google reCAPTCHA.
Protect your WordPress login form from bots and brute force attacks with Google reCAPTCHA, a slide-to-unlock captcha, or an icon captcha.
Professional security plugin focused on hardening, and essential security best practices for business websites and WooCommerce stores.
Increase security and protect against bots, spammers and hackers with Cloudflare Turnstile, a friendly, free CAPTCHA replacement
Protect your WordPress login and admin area using Cloudflare Turnstile, a modern CAPTCHA alternative.