Malik Naik

The reCAPTCHA Lite protects your WordPress site from the bots, brute-force attacks, spam, and abuse. This plugin comes with the support of reCAPTCHA v3 and v2 Checkbox. The reCAPTCHA v3 allows users to navigate site without solving “I’m not a robot” challenges.
You can integrate the Google’s reCAPTCHA in the following forms:
<ul>
<li>Login Form</li>
<li>Registration Form</li>
<li>Lost Password Form</li>
<li>Reset Password Form</li>
<li>Comment Form</li>
<li>WooCommerce Forms</li>
<li>Buddy Press Signup Form</li>
</ul>
If you are using the Google reCAPTCHA v3 then the following actions list shows the action names that will be used to hit the <a href="https://developers.google.com/recaptcha/docs/verify#api_request" rel="nofollow ugc">Google’s reCAPTCHA API endpoint</a> during validation. For more information on actions checkout out the <a href="https://developers.google.com/recaptcha/docs/v3#actions" rel="nofollow ugc">official documentation</a>.
<ul>
<li>login_form</li>
<li>register_form</li>
<li>lost_password_form</li>
<li>reset_password_form</li>
<li>comment_form</li>
<li>woo_register_form</li>
<li>woo_order_checkout</li>
<li>woo_login_form</li>
<li>buddypress_signup</li>
</ul>

reCAPTCHA Lite

Integrate the Google's reCAPTCHA Google's reCAPTCHA v2 Checkbox or v3 into the forms and protect your site from bots, brute-force attacks, s …

Niteo

Spider Blocker blocks most common bots that consume bandwidth and slow down your blog. 
It accomplishes this by using .htaccess file to minimize impact on your website. It’s hidden from external scanners.
Spider Blocker is specifically designed for Apache servers with mod_rewrite enabled, allowing you to effortlessly safeguard your website from the most prevalent bots that hamper performance and drain resources.
<h4>Plugin Features</h4>
<ul>
<li>Block Unlimited bots from viewing your site</li>
<li>Easy Export/Import rules (comes with most common list of bots)</li>
<li>Zero Footprint</li>
</ul>

Spider Blocker

Does what it promises to do. No more bad bots to my WP blog :)

Perfect!

SpiderBlocker will block most common bots that consume bandwidth and slow down your blog.

reCAPTCHA Lite vs Spider Blocker