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NEW! With support for Elementor Form Widget.
Eazy C(omment)F(orm) Captcha adds a mathematic exercise to the comment form, contact form 7 & elementor, preventing bots to spam your comments and forms. Now with Elementor & Contact Form 7 support!
You can easily customize the label text for the captcha in the backend of WordPress. Also you can change the HTML Markup if you like.
With support for Contact Form 7.

Eazy CF Captcha

Eazy C(omment)F(orm) Captcha adds a mathematic exercise to the comment form, contact form 7 & elementor, preventing bots to spam your comments and …

Chetan Vaghela

The plugin provides a funcationality to add validation on WordPress default comment form using Javascript and prevents it from dying when an error occurs and user can prevent to die on duplicate comment message.
<h3>Features And Options:</h3>
<ul>
<li>Validation on required fields using javascript.</li>
<li>prevent to die on comment form error message.</li>
<li>On duplicate comment display message below comment form instead die.</li>
<li>Change Comment form submit button text</li>
</ul>

Comment form validation and Customization

Wordpress default comment form validation using javascript and customization.

Eazy CF Captcha vs Comment form validation and Customization