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.
Login Security Captchav1.9.5
Secure WordPress login, registration, and comment form with Google reCAPTCHA or Cloudflare Turnstile. Prevent Brute-force attacks and more.
Hide and manage external download and redirect URLs behind customizable buttons and a clean titanium.download endpoint.
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.
Increase security and protect against bots, spammers and hackers with Cloudflare Turnstile, a friendly, free CAPTCHA replacement
Professional security plugin focused on hardening, and essential security best practices for business websites and WooCommerce stores.
Protect Contact Form 7 forms from spam with Google reCAPTCHA v2, reCAPTCHA v3, hCaptcha or Cloudflare Turnstile.