Category Manager Menu for visually navigating the Category Tree in Admin.
Easily perform actions such as:
Selecting the arrow icon in main navigation menu will display the top level categories.
Selecting the more action [...] icon within the top level categories will have the options to add a product or category.
Selecting the arrow icon next to a category will navigate into a list of sub categories assigned.
When in a subcategory the global more action [...] button will also include the options to view the category within the admin, assign products to the category, add a new product that will be assigned to the category, add a child category, and delete the category.
Finally, the drop down menu next to the parent category will give you a view of where you are within the category tree and provide a way to easily get back to any level you need.
The category manager menu can also be accessed when the menu is in the collapsed mode: