Webnow

WebNow Emoji Reactions enables quick, engaging reactions for your site visitors by injecting an emoji reaction bar into single post views.
Key features:
<ul>
<li>Add emoji reaction buttons to single post pages.</li>
<li>Admin settings page to configure emojis, label text, display position, and which post types show reactions.</li>
</ul>

WebNow Emoji Reactions

Short Description: WebNow Emoji Reactions adds a one-click emoji reaction bar to posts, allowing visitors to express reactions using emojis.

stuartquin

Emoji Reactions allows visitors to a WordPress site to rate and react to 
content using Emojis.
<ul>
<li>Full set of emoji from <a href="http://emojione.com" rel="nofollow ugc">EmojiOne</a></li>
<li>Support for range of content – posts, pages, comments.</li>
<li>Track user votes – only one of each reaction per user per content item.</li>
<li>Shortcode support – add reactions anywhere in content</li>
</ul>

Emoji Reactions

Add emoji reactions to posts, pages and comments. Inspired by Slack

WebNow Emoji Reactions vs Emoji Reactions