Louis

Brute-force attacks are common on your WordPress login page if not dealt with properly. Googles reCaptcha is a great candidate for handling this issue.
Major features in WP reCaptcha Login include:
<ul>
<li>Utilizes reCaptcha V3 (no checking on boxes to prove you’re not a robot).</li>
<li>Quick Setup. Just add your reCaptcha Site Key and Secret key by going to Settings > Recaptcha Settings. </li>
</ul>
Note: 
You’re reCaptcha keys can be obtained from https://www.google.com/recaptcha/

WP reCaptcha Login

License: GPLv2 or later This plugin uses reCaptcha V3 to add an extra layer of security at your login screen, preventing brute-force attacks.

teamzt

The ZT Captcha plugin is a robust security tool for WordPress websites, offering a range of features that allow administrators to customize the captcha functionality. Here are the key features:
1. Form Integration: Administrators can enable or disable the captcha on various default WordPress forms such as:
<ul>
<li>Login form.</li>
<li>Registration form.</li>
<li>Reset password form.</li>
<li>Comment form.</li>
</ul>
2. Captcha Types: Administrators can select different types of captchas:
<ul>
<li>Numeric captcha.</li>
<li>Alphabetic captcha.</li>
<li>Mathematical captcha with random option.</li>
<li>Mathematical captcha with algebraic operations.</li>
</ul>
3. Captcha Customization: Administrators can customize the captcha string by:
<ul>
<li>Including special characters.</li>
<li>Including uppercase letters.</li>
<li>Setting a limit on the number of captcha digits.</li>
</ul>
This plugin is designed to enhance the security of WordPress websites by implementing a human verification test to protect against potential spam and unauthorized access attempts.

ZT Captcha

The captcha plugin keeps WordPress sites safe from spam and password hacks by requiring a simple test to prove you're human, not a computer.

WP reCaptcha Login vs ZT Captcha