Frankie Jarrett

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This plugin is perfect for:
<ul>
<li>Playing an <a href="http://en.wikipedia.org/wiki/April_Fools%27_Day" rel="nofollow ugc">April Fools’ Day</a> joke</li>
<li>Pissing off your colleagues</li>
<li>Freaking out your boss</li>
<li>Increasing hacker bounce rate</li>
</ul>
Press the <code>z</code> key to toggle Zing! on and off.
Development of this plugin is done <a href="https://github.com/fjarrett/zing" rel="nofollow ugc">on GitHub</a>. Pull requests welcome. Please see <a href="https://github.com/fjarrett/zing/issues" rel="nofollow ugc">issues reported</a> there before going to the plugin forum.

Zing!

Turn your admin panel upside down. Literally.

themifyme

Conditional Menus is a simple yet useful WordPress plugin by <a href="https://themify.me/" rel="nofollow ugc">Themify</a>, which allows you to swap the menus in the theme as per specific conditions. In short, you can have different menus in different posts, pages, categories, archive pages, etc. It works with any WordPress theme that uses the standard WordPress menu function.
<h3>How to use it</h3>
Once you activate the plugin, you will see the conditional menus on the Manage Locations tab located in your WP Admin > Appearance > Menus page.
1) To add conditional menu: click “Conditional Menu” and select a menu from the list (you can create these menus in the “Edit Menus” tab) 
 – You can remove the menu by selecting “Disable Menu” from the list. 
2) Click on “+ Conditions” to add conditions in the modal box (tick the checkboxes where you want the menu to appear) 
3) To remove the conditional menus, click on the “X” button
Visit https://themify.me/conditional-menus for more details.

Conditional Menus

This plugin enables you to set conditional menus per posts, pages, categories, archive pages, etc.

Zing! vs Conditional Menus