This is a simple and clear admin design that makes your WordPress administration section more clear and relaxed.
Folder Menu Vertical is a flash dynamic menu module for your WordPress 3.0+ website, designed to meet your needs and preferences.
Zen Menu Logic allows the user to select any of several custom menus to appear on a per page basis.
Manage your Menus in the Customizer. GSoC Project & WordPress core feature-plugin.
Enhanced Navigation Menu Widget.
Menu with Page Assignment Widget
Show a list of links to other pages within the same section, as defined in a custom menu. Great for CMS.
Custom Page Menus plugin allows custom menus to be defined on a per-page basis.