Marcus Downing

This plugin improves the All Posts or All Pages view in the admin section by adding columns for 
any taxonomy you wish. There are two ways to use it:
<ol>
<li>Use the setting page to select the taxonomies.</li>
<li>Write code to add a column in exactly the right place.</li>
</ol>

Post Taxonomy Column

Tested up to 3.2.1 Stable tag: trunk Add columns to the All Posts, All Pages and custom post types for any taxonomies.

Ionut Staicu

Did you ever wanted to filter posts by a taxonomy (e.g. Category, Tag) on your admin screen and you had no option to do so? Fear not, here is a plugin that can help you out!
You’ll have a nice select box that allows you to filter posts by any taxonomy term you want.
It works for any post type that have a defined taxonomy; it doesn’t matter if is a built in post type (post, page) or a custom post type.

Filter Post Types by Taxonomy

Quickly filter posts by taxonomy on your admin screens!

Post Taxonomy Column vs Filter Post Types by Taxonomy