Agency Dominion Inc.

The Comments Element displays a field for users to input comments. The element uses the active theme’s comments form/template and falls back to the default WordPress comments form/template.
Requires the core <a href="https://wordpress.org/plugins/fusion/" rel="ugc">Fusion</a> plugin.
<h4>About Fusion</h4>
Fusion is a flexible and expandable page builder for WordPress. It focuses on providing a powerful, user friendly experience that aims to closely emulate the native WordPress look and feel.
Built on the popular Bootstrap framework, Fusion will allow you to easily split your theme’s content area into responsive multi-column layouts.
The Core plugin includes elements for outputting text and raw code into the columns while our free Expansion plugins add all the functionality you need for your WordPress site including Galleries, Videos, and Maps.
Fusion also allows you to create Components and Templates. Components are pieces of a layout that can be repeated across several different pages and edited / maintained in one place, and Templates are full page layouts that can be loaded and modified to easily create new pages.
Fusion is designed to be developer friendly, making it possible for WordPress plugin and theme developers to add, modify, and expand the Fusion ecosystem to limitless horizons.
<h3>Links</h3>
<a href="http://agencydominion.helpscoutdocs.com/" title="Fusion Knowledge Base" rel="nofollow ugc">Knowledge Base and User Guide</a>

Fusion Page Builder : Extension – Comments

kopatheme

tranthethang

Kopa Page Builder plugin helps you create static pages by manually adding, editing or moving the widgets to the expected sidebars. 
Unlike the other Page Builder plugins which available on WordPress.org now, this plugin requires a deep understanding of technical knowledge and WordPress to use for your website.

Kopa Page Builder

Kopa Page Builder plugin helps you create static pages by manually adding, editing or moving the widgets to the expected sidebars.

Fusion Page Builder : Extension – Comments vs Kopa Page Builder