ryokurosu

This plugin is easy to set category ranking. 
If you view the post,Ranking is on the same category.
This plugin:
<ul>
<li>Easy setting ranking widget on same category</li>
<li>Frontpage ranking is able to choose</li>
</ul>
Please contact me if you want additional setting.

Simple Category Ranking

this is a better way to ranking widget with category.

MD.NESAR MRIDHA

This plugin is addons for <a href="https://wordpress.org/plugins/wp-postviews/" rel="ugc">WP-PostViews</a> plugin.If you configured this plugin then it will be work.

Simple Category Ranking vs Popular Posts Views