CrestaProject

<a href="https://crestaproject.com/cresta-help-chat-demo-page/" rel="nofollow ugc">Plugin Demo</a> | <a href="https://crestaproject.com/downloads/cresta-help-chat/" rel="nofollow ugc">Plugin Homepage</a>
With Cresta Help Chat you can allow your users or customers to contact you via WhatsApp simply by clicking on a button. Users may contact you directly in private messages on your WhatsApp number and continue the conversation on WhatsApp web or WhatsApp application (from mobile). 
You can use the floating button which is positioned at the bottom right of the site or a button inside post or pages using the [cresta-help-chat text=”Need Help?” icon=”yes” position=”top”] shortcode. 
Cresta WhatsApp Chat is compatible with WooCommerce and WPML.
Some features
<ul>
<li>Add the button to open WhatsApp Chat at bottom right of your site</li>
<li>Use the shortcode [cresta-help-chat] to add the WhatsApp button in your posts, pages or custom post type</li>
<li>Choose which pages to show the WhatsApp Chat button</li>
<li>Mobile version: click the button and automatically open the WhatsApp App (if installed)</li>
<li>and more…</li>
</ul>
PRO version features
<ul>
<li>Change position of the box button</li>
<li>Change colors of the box button</li>
<li>Add tooltip on the box button</li>
<li>Change box size</li>
<li>WhatsApp widget</li>
<li>Different Animations</li>
<li>and much more…</li>
</ul>

Cresta Help Chat

Allow your users and customers to contact you via WhatsApp with a single click.

alexvtn

Chatbox Manager allow you to display multiple WhatsApp buttons on your website.
You are able to add a button inside whole website or inside specific posts/pages/taxonomies page, use 2 different icons and 5 different layouts.
You can also put a WhatsApp button after the content of all contents or after specific posts/pages.
Free features
<blockquote>
Put a WhatsApp button inside whole website or inside specific posts/pages/taxonomies page 
 Change position of chatboxes 
 Change button size 
 Use 2 different icons 
 Use 5 different layouts
</blockquote>
Premium features
<blockquote>
PRO layouts 
 You can use 2 additional layouts.
Popup chatboxes 
 You can select one of available popup chatboxes.
Unlimited chatboxes 
 You can generate unlimited chatboxes with different numbers.
Shake animation 
 Capture Users’ Attention thanks to the shake animation.
Pulse animation 
 Capture Users’ Attention thanks to the pulse animation.
Dynamic values 
 Include the dynamic values inside the pre-filled message to include the TITLE and URL of current post/page.
Sharing feature 
 Leave empty the WhatsApp number field to allow your visitors to share the current post/page.
Backup section 
 You can create a backup of plugin settings, import an existing backuo or restore the default settings.
Device selection 
 Select the device where you want to display the WhatsApp button.
</blockquote>
You can get the premium version from the link below: 
<a href="https://www.themeinprogress.com/chatbox-manager-pro" rel="nofollow ugc">https://www.themeinprogress.com/chatbox-manager-pro</a>
You can see an example of all layout from the link below: 
<a href="https://demo.themeinprogress.eu/chatbox-manager-pro/layouts/" rel="nofollow ugc">https://demo.themeinprogress.eu/chatbox-manager-pro/layouts/</a>
<h4>Installation</h4>
Once you have installed the plugin, you just need to activate the plugin in order to enable it.
<h4>Configuration</h4>
Chatbox Manager will add a new admin page, where you can manage all chatboxes.
<h3>Translators</h3>
<h4>Available Languages</h4>
<ul>
<li>English (Default)</li>
<li>Italiano</li>
</ul>

Chatbox Manager

Chatbox Manager allow you to display multiple WhatsApp buttons on your website.

Cresta Help Chat vs Chatbox Manager