Rajnish K.

This is a simple, light weight and little widget that adds in some useful amazing functionality that WordPress doesn’t offer in its category widget. Some Features of this Widget are:-
<ul>
<li>Manage Which Category to Show and Which to Hide.</li>
<li>Enable Disable Post Count.</li>
<li>Hide Or Show Empty Categories with no posts.</li>
<li>Limit Max Number of Categories to be Displayed…etc.</li>
</ul>

Easy Categories Management Widget

This plugin adds a widget which let you display a list of categories in your sidebar with more features and flexibility.

tormorten

Plugin Categories gives you the abillity to categorize all your WordPress Plugins in the same manner you would categorize posts.
It is a back end plugin that has no effect on anything in the front end of your website. It does not modify any plugin files for the categorization.

Plugin Categories

Categorize your WordPress Plugins just like you would posts.

Easy Categories Management Widget vs Plugin Categories