wpcraft

CasePress UpVote – posts and comments rating system.
[upvote post=123 comment=123] – Shortcode return’s upvote buttons for posts or comments, if attributes is blank – ids get’s automaticly.
[upvote_favs type=all | posts | comments ] – Shorcode return’s ids of favorited posts | comments | posts&comments, if attributes is blank – type = all.

CasePress UpVote

CasePress UpVote - posts and comments rating system.

CRUDLab

WP Like button allows you to add Facebook like button on your wordpress blog. You can also add Share button along with Like button or can add recommend button.
<h4>Features</h4>
<ul>
<li>Create like button for site, for your fanpage or for every single post and page.</li>
<li>Display like button on homepage or all pages. </li>
<li>Display like button on specific pages.</li>
<li>Like button preview. </li>
<li>4 Types of button layouts.</li>
<li>Compatible with all type of themes. </li>
<li>Display like button with shortcode [fblike]</li>
<li>Display share button along with like button. </li>
<li>ON/OFF Indication</li>
</ul>
<blockquote>
 Docs & Support 
You can find <a href="http://bit.ly/1EjxScj" rel="nofollow ugc">docs</a>, <a href="https://wordpress.org/plugins/wp-like-button/faq/" rel="ugc">FAQ</a> and more detailed information about WP Like Button on <a href="http://crudlab.com/" rel="nofollow ugc">CRUDLab.com</a>. If you were unable to find the answer to your question on the FAQ or in any of the documentation, you should check the <a href="https://wordpress.org/support/plugin/wp-like-button" rel="ugc">support forum</a> on WordPress.org. If you can’t locate any topics that pertain to your particular issue, post a new topic for it
 Recommended Plugins 
The following are other recommended plugins by the author of WP Like Button.
<ul>
<li><a href="https://wordpress.org/plugins/crudlab-facebook-like-box/" rel="ugc">CRUDLab Facebook Like Box</a> – CRUDLab Facebook Like Box allows you to add Facebook like box to your wordpress blog. </li>
<li><a href="https://wordpress.org/plugins/wp-tweet-plus/" rel="ugc">WP Tweet Plus</a> – WP Tweet Plus allows you to add tweet button on your wordpress blog. You can add tweet Button homepage, specific pages and posts.</li>
<li><a href="https://wordpress.org/plugins/jazz-popups/" rel="ugc">Jazz Popups</a> – Jazz Popups allow you to add special announcements, messages, tips, offers on your homepage or every page of your wordpress website. You can add text, image or video.</li>
</ul>
</blockquote>

WP Like Button

WP Like button allows you to add Facebook like button on your wordpress blog.

CasePress UpVote vs WP Like Button