Beherit

Plugin protects WordPress website forms from spam and brute-force attacks with Google reCAPTCHA. There is no additional user-unfriendly options, just choose captcha version, enter keys and optionally set captcha theme, size or badge position – nothing more!
<h4>What forms are protected with reCAPTCHA?</h4>
<ul>
<li>Login form</li>
<li>Reset password form</li>
<li>New password form</li>
<li>Registration form</li>
<li>Comment form</li>
<li><a href="https://wordpress.org/plugins/lite-contact-form/" rel="ugc">Lite Contact Form</a></li>
<li>Contact Form 7</li>
</ul>
The reCAPTCHA verification will be required only for not logged in users.

GreCAPTCHA

Protects WordPress website forms from spam and brute-force attacks with Google reCAPTCHA.

hatul

“En Spam” blocks totally comments and form submissions of bots by cookies and javascript. Bots can’t use cookies and javascript and therefore will not be able to comment. 
Users that blocking cookies or Javascript can to comment after transfer in special page.
We protect Elementor Pro and Contact Form 7 (cf7) forms and default comments of WordPress.
The plugin is transparent to your visitors, only bots will be blocked.
You can see how many spambots blocked in dashboard widget.
“En Spam” means “have not spam” in Hebrew.

En Spam

Block spam with cookies and JavaScript. All Spambots will remain away from your blog. Without settings or Captcha, install and forget the spam.

GreCAPTCHA vs En Spam