Adds support for child navigation to wp_nav_menu()
This one will help you to list all the subpages in a list with links, this one is intented to help WP to be used as CMS.
Adds the ability to easily add and display a sub title/heading on any public post type.
Provides a theme-independent widget that lists the child pages underneath the current page.
This plugin is designed to be a page menu for people using WordPress as a CMS