Ko Min

A plugin to site owner to add voting functionality to the blog posts. 
Using the power of the ajax, voter can have instant voting and update to top voted widget. 
It doesn’t matter voter is logged in or not. Public voting is done by tracking their IP address. 
It isn’t end here. Blog owner will have complete control over those voting feature as well as using custom 
vote button and vote text.
Features
<ol>
<li>Control voting feature via voting on/off (admin feature)</li>
<li>Control allow or disallow post author to vote his own posts (admin feature)</li>
<li>Control allow or disallow public voting (admin feature)</li>
<li>Customise vote and voted text (admin feature)</li>
<li>Customise vote and voted buttons images (admin feature)</li>
<li>Customise alert message for non logged in users (admin feature)</li>
<li>Voting logs for site administrator (admin feature)</li>
<li>Sort voting logs by vote count or voted date (admin feature)</li>
<li>Show current vote count and vote button on frontend templates</li>
<li>Compitible with almost all of the themes. You just need to call required function from your template</li>
<li>Total vote count widget</li>
<li>Top voted widget</li>
<li>Now public voting supported.</li>
<li>Now shortcode supported. e.g. [wpvoting]</li>
<li>Top voted posts list shortcode</li>
</ol>
Features in future releases
<ol>
<li>Export to CSV for admin voting logs</li>
<li>Registered user voting logs</li>
<li>Re-implement backend voting log list with WP_List_Table class</li>
</ol>
Note-1: Kindly please rate this plugin or vote the compatibility. So I could review it and improve the quality of this plugin. Appreciate your help!
Resources
http://www.garyc40.com/2010/03/5-tips-for-using-ajax-in-wordpress/
http://www.onextrapixel.com/2009/06/22/how-to-add-pagination-into-list-of-records-or-wordpress-plugin/
http://www.onextrapixel.com/2009/07/01/how-to-design-and-style-your-wordpress-plugin-admin-panel/
http://planetozh.com/blog/2009/09/top-10-most-common-coding-mistakes-in-wordpress-plugins/
https://wordpress.org/extend/plugins/vote-it-up/
https://wordpress.org/extend/plugins/shortcodes-ultimate/

WP Voting

Site owner to add voting functionality to the blog posts.

Pierre Lebedel

The Kodex Posts likes plugin allows your visitors and logged in users to like or dislike your posts, pages, and custom post types. 
The AJaX based interface is clean and fully customizable. 
The Dislike button is not required, and the buttons labels are editables. 
The buttons shows their counter. 
Shortcodes are availables for display the buttons on your post content and for the Like counter only. 
In the admin interface, columns are showing the actual count, and there is a metabox in the editon page.

Kodex Posts likes

A simple interface for including like/dislike buttons on posts. Keep up the good work! 
In future I'd love to see a dashboard area where you get a quick snapshot each posts likes / dislikes which you could sort, search and filter to make it easier to review the feedback, but it's not essential.



Really Great Plugin

It does exactly what I need. It is very simple and works well. Seems to be a clean install and lightweight functionality.  Hopefully the author comes back to do an update soon. Many thanks for this wonderful plug in.

This plug in is simple and great. Out dated but it still works.

A simple AJaX based WordPress Plugin which allows your visitors to like or dislike posts, pages and cutom post types.

WP Voting vs Kodex Posts likes