LordPretender

Similar to the original native one, this plugin let you define the range of stats to retrieve. 
Also you will be able to add the category name of the post.
Finally, this widget will only display posts (and not pages too). 
This plugin read the top 100 of posts/pages and keep only the X first POSTS (X = number defined in the widget parameters). So, you can have less posts than requested.
Jetpack is required to work. 
A wordpress account and your blog must be linked.
You can find a demo here : http://www.spoils.fr/ 
The widget is named “Articles populaires” on the sidebar.

Jetpack Popular Posts

Using Jetpack stats, this widget will display the most popular posts.

kn007

WordPress Comments Manager help you to quickly find comments and manage comments.
It can be very convenient to review selected comments, open the comment in a new window, reply comment, edit comment and delete comments.
See the screenshots for more details.
<h3>Requirements</h3>
PHP 5.3+, PHP7 recommended for better performance, WordPress 3.6+, WordPress 4.7+ recommended for better experience.

WordPress Comments Manager

Manage your comments faster, handle data more quickly.

Jetpack Popular Posts vs WordPress Comments Manager