superside7

It is a plugin which can set and display a 5-point rating for posting. There are few setting items, it can be used simply.
Features include:
<ul>
<li>A 5-point rating can be set for each item for posting</li>
<li>Display rating by star in post</li>
<li>Ranking display widget by rating points</li>
<li>User ratings can be accepted from comments</li>
</ul>
And more
<ul>
<li>Display rating by user average </li>
<li>Support other posttypes</li>
<li>Items can be set variably</li>
<li>Shortcode that can display ratings in any place</li>
<li>Shortcode that can display ranking in any place</li>
</ul>

WP Kuchikomi

This plugin add a 5-point rating system for your wordpress, and can also accept ratings from users.

wponeco

WP1 Like is a simple Like button plugin for posts, pages, custom post types and WooCommerce products.
Demo Links: 
<a href="http://wp1.co/wp/blog/" title="Like button in Action" rel="nofollow ugc">Like button on single post</a> 
<a href="http://wp1.co/wp/lorem-ipsum/" title="Like button in Action" rel="nofollow ugc">Like button on page</a> 
<a href="http://wp1.co/wp/product/cap/" title="Like button in Action" rel="nofollow ugc">Like button on woocommerce product</a>

WP1 Like

Display Like button on posts, pages, custom post types and WooCommerce products.

WP Kuchikomi vs WP1 Like