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.

Abhishek shukla

This plugin is the most powerfull plugin which easily put the validation on your wordpress comment form.
This plugin is compatibile with other plugin.
In this plugin need to only activate the plugin.
For more plugins, themes and WordPress support , Please visit http://www.interactiveitsolutions.com/

Advanced Comment Validation

This plugin adds wordpress comments validation to the Wordpress comment form. only need to activate the plugin than validation is working.

Comment form validation and Customization vs Advanced Comment Validation