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!

newbiesup

This plugin enables you to add an ajax Love It button to your WordPress post. You can choose it to appear on the top or bottom of the content. It also includes a shortcode to let you manually add the button to the post.
Plugin homepage: <a href="http://ptheme.com/item/wp-love-it/" title="WP Love It" rel="nofollow ugc">http://ptheme.com/item/wp-love-it/</a>
<h4>Features</h4>
<ul>
<li>AJAX love it without refreshing the page</li>
<li>Cookies support to prevent repeatedly click the button</li>
<li>Automatically add the button on top of post content</li>
<li>Shortcode included to add the button</li>
</ul>
<h4>Support</h4>
We will do our best to provide support through the WordPress forums. However, all plugin support is provided in our helpdesk. If you have not registered yet, you can do so here: <a href="http://ptheme.com/members/" rel="nofollow ugc">http://ptheme.com/members/</a>.
<h4>Feedback</h4>
If you like this plugin, then please leave us a good rating and review. Consider following us on <a href="https://twitter.com/pthemecom" rel="nofollow ugc">Twitter</a>, and <a href="https://www.facebook.com/pthemecom" rel="nofollow ugc">Facebook</a>

bbPress Voting vs WP Love It