Admin Menu Tree Page View
This is a WordPress plugin that adds a page tree of all your pages to the admin menu. This way all your pages will always be easy available, no matter where you currently are working in WordPress.
There are options to add pages directly in the tree, view pages, and you even find your pages by using the search-as-you-type-function (you got to try that one, it’s marvelous!)
Admin Menu Tree Page View is a super addition to any CMS-like WordPress installation that uses lots of pages in a tree hierarchy.