Harish Kumar

Advanced Post Type Ratings allows users to easily add a visual smilie icons rating system to any post type including custom post types.
The plugin is easily configured via an admin options page, allowing quick configuration of multiple smilie icons ratings.
<h4>Features</h4>
<ul>
<li>It has Multiple rating criteria (eg. bummer, good, sad, lol etc…). </li>
<li>In-built three icons styles (Classic, Glossy Emoji, Dark Emoji ) for rating icons.</li>
<li>Allows to share on Twitter, Facebook and Google+ after vote.</li>
<li>Graphical bar above all moods which shows percentage of votes.</li>
</ul>
<h4>Settings</h4>
Goto <code>Settings > WP Reactions Box > Settings Tab</code> to configure plugin settings.
You can also use <code>hkp_reactions_box()</code> PHP function in your templates or use the <code>[hkp_reactions_box]</code> shortcode to show the Reactions Box where you want.
<h4>Rating Stats</h4>
Goto <code>Settings > WP Reactions Box > Stats Tab</code> to see recent ratings and most rated emotions
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WP Reactions Box

Full-featured & real-time emotion/mood rating plugin which allows visitor to rate individual post though smilie icons.

natekinkead

This simple yet powerful plugin integrates with the bbPress forum plugin to add a new feature which allows users or visitors to vote up or down on topics and replies. Each topic and reply has a total score with an up arrow and a down arrow.
This plugin uses AJAX to save the vote on-the-fly without refreshing the page.
It’s also AMP compatible!
Visitors can only vote once on each topic or reply.
Features Included: 
* Show or hide (and customize) labels for up and down 
* Disable voting on topics or replies globally 
* Disable voting on specific forums 
* View-only score on closed topics 
* Sort topics and replies by voting scores 
* Admin bypass 
* GamiPress integration
Pro Features Available: 
* Historical weighted score visualization 
* Accepted answers 
* “Who voted” avatars 
* Sort dropdown 
* Sort on weighted score 
* Sort on trending score 
* Trending topics widget 
* Schema for Q&A rich snippets 
* Voting email notification to author 
* Mark topics or replies with poor scores as spam
Purchase bbPress Voting Pro at <a href="https://wpforthewin.com/product/bbpress-voting-pro/" rel="nofollow ugc">WP For The Win</a>!

bbPress Voting

I hope you enjoy this plugin!  If you have any questions, please post a topic in the for support forum.

Couldn't believe there was nothing out there like this!

Although I wish it had some options for placement. Not sure I like it above the author avatar.

Pretty cool

Let visitors vote up and down on bbPress topics and replies just like Reddit or Stack Overflow!

WP Reactions Box vs bbPress Voting