Tommie Hansen

Simple WordPress Plugin that gives you the ability to add a widget where the most popular posts for the current month is displayed. You also have the option to name the widget and define number of posts to show. Read more about it at: http://byme.se/wp-plugins/top-posts-this-month.html

rezehnde

Show a top 10 list from your popular blog posts easily.
This plugin is dedicated to Sara Miranda Rezende, my lovely daughter.
<h3>How to use</h3>
Put this custom tag inside posts, pages or widgets in order to show a top 10 list from your posts:
[top10posts] to show a top 10 list of posts of current year and current month 
[top10posts year=2009] to show a top 10 list of posts of year 2009 and current month 
[top10posts year=2009 month=NULL] to show a top 10 list of posts of year 2009 and all months 
[top10posts year=NULL month=NULL] to show a top 10 list of posts from all the time

Top Posts This Month vs Top 10 Posts