Vladimir Prelovac

WP Wall is a “Wall” widget that appears in your blog’s sidebar acting as a cool shoutbox for your visitors.
The comment will appear in the sidebar immediately, without reloading the page.
All comments are internally handled by WordPress so that means you have normal comment moderation, SPAM protection and new comment notification.
WP Wall is fully customizable with a CSS file and included graphics.
WP Wall features: 
* Global commenting “Wall” 
* Comments are handled entirely by WordPress 
* RSS Feed for the Wall 
* Smilies 
* Instant delete for admin 
* Option to display HTML and make links clickable 
* Navigation through pages 
* Interactive Wall: It can automatically refresh turning into a chat
Plugin by Vladimir Prelovac. Also check out <a href="https://managewp.com" rel="nofollow ugc">ManageWP</a>.
<h3>License</h3>
This file is part of WP Wall.
WP Wall is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
WP Wall is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with WP Wall. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

WP Wall

"Wall" widget that appears in your blog's sidebar acting as a cool shoutbox for your visitors.

thenbrent

Every time a page reloads to submit a form, a puppy dies. This plugin is the saviour of puppies.
Grunion Ajax submits a <a href="https://wordpress.org/extend/plugins/grunion-contact-form/" rel="ugc">Grunion Contact Form</a> using Ajax. It makes it super fast for visitors to submit a form.
The Grunion Ajax Javascript file is only loaded if the post or page in question includes the Grunion <code>[contact-form]</code> shortcode, so it’s efficient too.
The only caveat, Ajax submission has not been tested for Grunion Forms included in a widget.

Grunion Ajax

Using Grunion Contact Form? Make form submission slick with Grunion Ajax.

WP Wall vs Grunion Ajax