This plugin was developed because I have one blog with multiple authors who have 
their own categories. The users’ category access is administered by the Authors2Categories 
in Tools panel of the admin.
Select the user. Click on Edit User (Tools>Authors2Categories) and select the categories he/she 
are allowed to post to. Click on Save when you are done.

Author2categories

This plugin was developed because I have one blog with multiple authors who have

Greg Ross

redlettuce

Just Writing Statistics is a fork of WP Word Count
Just Writing Statistics tells you exactly how many words you’ve written on your site with statistics by:
<ul>
<li>Top Content</li>
<li>All Content</li>
<li>Month</li>
<li>Year</li>
<li>Author</li>
<li>Tags</li>
<li>Categories</li>
<li>Frequency (new!)</li>
</ul>
Just Writing Statistics also has reading times for each post and page of your site. Find out how many hours of content you’ve written or let readers know how long your articles are. You can include reading time at the top of each of your posts automatically or use a shortcode.
<h3>Features</h3>
<ul>
<li>Quickly see how many posts and pages you’ve created and how many total words they add up to.</li>
<li>View and display estimated reading times for each piece of content on your site.</li>
<li>Support for custom post types so you can monitor word counts from content created by your themes and plugins.</li>
<li>View your writing output for each month broken down by post type.</li>
<li>See all of your site author’s word counts with breakdowns by post type.</li>
</ul>

Just Writing Statistics

Calculate your writing statistics on your WordPress site.

Author2categories vs Just Writing Statistics