WP Chill

Silkalns

Cristian Raiber

A very useful plugin for everyone using WordPress. Adds reCaptcha security to the WordPress login form, register form and comment form. This plugin could help your blog get rid of a lot of spam comments or brute-force attacks.
Nothing gets passed it if the reCaptcha doesn’t validate.
A few notes about the plugin:
<ul>
<li>Supports audio or image captcha types</li>
<li>Can generate the reCaptcha image / audio type in a number of predefined languages</li>
<li>Adds reCaptcha protection to the WordPress login form</li>
<li>Adds reCaptcha protection to the WordPress register form</li>
<li>Adds reCaptcha protection to the WordPress comment form</li>
<li>Adds reCaptcha protection to the WordPress recover password form</li>
</ul>

Uber reCaptcha

This plugin adds the reCaptcha form to the WordPress login form, recover password form, register form and comment form.

Nurul Islam

Turnstile Pro adds Cloudflare’s free Turnstile CAPTCHA protection to your WordPress site without needing Google reCAPTCHA.
<ul>
<li>Protects login, registration, comment, and password reset forms</li>
<li>Dynamic or Static Turnstile script loading (performance optimized)</li>
<li>Admin settings panel with IP whitelist management</li>
<li>Custom error message option</li>
<li>Clean uninstall support (removes plugin settings)</li>
<li>Translation ready</li>
</ul>
Turnstile Pro is lightweight and follows WordPress coding standards.
<h3>Credits</h3>
Plugin developed by Nurul Islam. 
GitHub: <a href="https://github.com/faqnurul" rel="nofollow ugc">https://github.com/faqnurul</a>

Turnstile Pro – Cloudflare CAPTCHA Protection

Lightweight, easy-to-configure Cloudflare Turnstile CAPTCHA protection for WordPress login, registration, comments, and password reset forms.

Uber reCaptcha vs Turnstile Pro – Cloudflare CAPTCHA Protection