atonyk

This plugin adds the ‘Like’ button and ‘Who Likes’ list to:
<ul>
<li>WordPress posts and comments</li>
<li>BuddyPress activities and comments</li>
<li>BBPress posts</li>
</ul>
It allows for registered users to like the items. And it shows for both registered and unregistered users the existing likes.
The components to show the likes to can be configured on the settings page. For example, the likes can be disabled for WordPress comments.
Likes are saved in the internal WordPress and BuddyPress meta tables. No separate tables are created.
The plugin cleans all its data on uninstallation (but not on deactivation).
You can contribute on – <a href="https://github.com/ansnap/like-and-who-likes" rel="nofollow ugc">https://github.com/ansnap/like-and-who-likes</a>

Like And Who Likes

Adds the 'Like' button and 'Who Likes' list for WordPress, BuddyPress and BBPress.

lienann

Add the possibility to use rating field in ACF.
Plug-in provide three calculation method for voting:
<ol>
<li>calculate by cookies (any visitor);</li>
<li>by IP (any visitor);</li>
<li>by user id (registered users only).</li>
</ol>
If “calculated by cookies” is selected, the only users which use browser with 
cookies enabled will be able to vote
In field settings you can also:
<ol>
<li>open|close vote;</li>
<li>tune the number of stars (1 to 20);</li>
<li>specify the method of re-voting – possible(period)|never</li>
</ol>
Use the_field($field_key, $post_id) or get_field($field_key, $post_id) function 
in page template for field output (see ACF documentation).
In admin panel the rating is inactive.
Attention! Before removing the plugin files read uninstall.php
Languages: English, Français, Русский
I apologize for possible mistakes in plugin translation. 
I will be glad to accept the help with the correct translation of a plugin into 
English and to correction of my mistakes.
<h4>Gratitudes:</h4>
Thanks to Ivan Shamshur for JS.
French Translation – thanks to Nicolas Kern.
<h4>Compatibility</h4>
This ACF field type is compatible with: ACF 4
For developers: https://github.com/lienann/acf-starrating

ACF: Star Rating Field

Hey,

The plugin is almost perfect!

The only thing that is missing is a function that returns the average voting results.

Can you add it please? :D

Thank you!

Cheers mi amigo!

The plugin is great, if you add something it'll be greater!

"Star rating" field. Add-on to Advanced Custom Fields plugin.

Like And Who Likes vs ACF: Star Rating Field