linewbie

WP Post Icon is a Free and Open Source WordPress plugin which is enable blog authors to upload and automatically insert topic icons or images in to your posts on the fly. You can control the position of the icon. Just select which image to display when you are writing a post, it will be automatically displayed.
<a href="http://www.linewbie.com/attach-diy/files/wp-post-icon.zip" rel="nofollow ugc">Download now!</a>
Features:
<ul>
<li>Automatically insert your topic icons in to your blog posts.</li>
<li>Very little manual work is required, just select which image to display when you are writing a new post.</li>
<li>
You could also use no image at all.
</li>
<li>
<a href="http://www.linewbie.com/sf-forum?forum=8&page=1" rel="nofollow ugc">Support</a>
</li>
<li><a href="http://www.linewbie.com/2008/02/wp-post-icon.html" rel="nofollow ugc">Version History</a></li>
<li><a href="https://wordpress.org/extend/plugins/wp-post-icon/faq/" rel="ugc">FAQ</a></li>
<li><a href="https://wordpress.org/extend/plugins/wp-post-icon/installation/" rel="ugc">Installation</a></li>
</ul>

WP Post Icon

Enables blogs authors to upload and select topic icons or images and have it automatically show up in their blog post.

Zayed Baloch

Hammal Albulushi

Naeem Noor

This plugin allows you to easily embed Font Awesome icon to your website using HTML or built-in shortcode handlers.
<h4>Features</h4>
<ol>
<li>Shortcode support. Example: For Font Awesome 5 <code>[wpfa5s icon=""]</code>, <code>[wpfa5r icon=""]</code>, <code>[wpfab icon=""]</code>, and for Font Awesome 4.7+ <code>[wpfa icon=""]</code></li>
<li>Use Larger Icon: <code>[wpfa icon="" size="2x"]</code>. Sizes: <code>xs</code>, <code>sm</code>, <code>lg</code>, <code>2x</code>, <code>3x</code>, <code>5x</code>, <code>7x</code>, <code>10x</code></li>
<li>Add Font Awesome icon in Menu with shortcode.</li>
<li>Support shortocde in Widgets.</li>
<li>Support post and page title.</li>
<li>Font Awesome version 6</li>
<li>Support Font Awesome version 5.+ and 4.7.0</li>
<li>Add Font Awesome icon from editor Toolbar button.</li>
</ol>
<h4>Shortcodes</h4>
Introduced three new shortcode for Font Awesome support.
Font Awesome v6 & v5 
 [wpfa5s icon=”home”] for Solid style. 
 [wpfa5r icon=”user”] for Regular style. support only in few icon. 
 [wpfa5b icon=”wordpress”] for Brands.
Font Awesome 4.7+ 
 [wpfa icon=””].
<h4>Note</h4>
The <code>fa</code> prefix has been deprecated in version 5. The new default is the <code>fas</code> solid style <code>far</code> regular style and the <code>fab</code> style for brands.
WP Font Awesome plugin still support Font Awesome version 4

WP Font Awesome

Nice and easy

This plugin allows you to easily embed Font Awesome icon to your site with simple shortcodes.

WP Post Icon vs WP Font Awesome