Chamara Denipitiya

Plugin shows post stats & analysis (counts) about your WordPres site.
Features of the plugin include:
<ul>
<li>Shows total number of posts (posts count) </li>
<li>Shows total number of published posts</li>
<li>Shows total number of future posts </li>
<li>Shows total number of draft posts</li>
<li>Shows total number of pending posts</li>
<li>Shows total number of private posts</li>
<li>Shows total number of auto-draft posts</li>
<li>Shows total number of trash posts</li>
<li>Shows total number of attachments and revisions</li>
<li>Shows total number of comments on posts</li>
</ul>

WP Post Stats & Analysis

Good plugin

License: GNU Version 2 or Any Later Version WP Post Stats & Analysis plugin shows post stats & analysis on your WordPress site dashboard for  …

AS OF MAY 2016, THIS PLUGIN IS NOT BEING MAINTAINED AND WILL NOT RECEIVE ANY FUTURE UPDATES. 
CONTACT ME IF YOU’D LIKE TO LIST AN ALTERNATIVE HERE.
Shows word and sentence counts plus a readability analysis of the post 
currently being edited using three different readability measurements.
Readability analysis is an attempt to show how difficult a text is to read. 
There are several methods of doing readability analysis. The most popular 
methods are used here. The Flesch and Flesch-Kincaid methods use formulas based 
on the average number of words per sentence and the average number of syllables 
per word. The Gunning-Fog method uses a formula based on the average number of 
words per sentence and the percentage of “hard” words (words with 3 or more 
syllables) in the passage.
Both the Gunning-Fog and the Flesch-Kincaid give a score that is the number of 
years of education the reader must have completed to understand the text. 
Different types of writing calls for different scores. Technical subjects may 
require a higher level of education so a higher Fog or Kincaid score is 
acceptable. Informal writing may try for a score in the 7-10 range. The Flesch 
score is a percentage. The higher the value, the better the readability.

FD Word Statistics Plugin

Shows word and sentence counts plus a readability analysis of the post currently being edited using three different readability measurements.

WP Post Stats & Analysis vs FD Word Statistics Plugin