damlys

<p>Complete dropdown tree navigation that contain pages, categories with posts, tags, authors and own menu.</p>
<h4>Features and highlights</h4>
<ul>
<li>Whole site in one place</li>
<li>Excluding pages and authors from navigation</li>
<li>Simple widget</li>
<li>4 skins</li>
</ul>
<h4>Translations/Languages</h4>
<p>This plugin is available in your WordPress language on site and in English and Polish in Dashboard.</p>
<h4>Skins</h4>
<ul>
<li>iOS Lion</li>
<li>Windows 8</li>
<li>Windows 7</li>
<li>Windows XP</li>
</ul>


EasyTree

Complete dropdown tree navigation that contain pages, categories with posts, tags, authors and own menu.

aoulmderat

<p>If you need to add more css and customization options to the Default WordPress Category Widget this plugin is for you.<br />
Using this plugin you can display your sidebar categories in a tree-view in just one click.</p>
<h4>Features</h4>
<ul>
<li>The selection state is preserved (the parent category remain open)</li>
<li>Fully customized and easy to use</li>
<li>Display as dropdown or tree-view</li>
<li>Dynamically create your website tree for all posts & categories</li>
<li>Ability to hide/show count</li>
<li>Ability to hide/show child</li>
<li>When a child is selected The parent category is also selected</li>
</ul>


Display Categories Tree

for performance the css is loaded only when needed

Minimum style and js

This plugin is a widget to customize and add more css options to the Default Wordpress Category Widget. This plugin requires fontawesome in your theme …

EasyTree vs Display Categories Tree