ggoad

Quick search for the admin panel side-nav! Adds a search bar to the admin sidebar; the plugin hides buttons that do not contain search text.

FindAroo

Quick search for the admin panel side-nav! Adds a search bar to the admin sidebar; the plugin hides buttons that do not contain search text.

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.

FindAroo vs Conditional Menus