Mara Noia

This plugin adds a “create new sibling” and a “create new child” button on the page edit page. 
This way you can easily create a new sibling or child directly from the active page, without having to choose the parent.
Further more you get a list of siblings of the current page, to make it fast to switch between editing siblings.

Mara Noia Extended Page Actions

When administrating your pages in WordPress this plugin can speed up productivity.

deardooley

Adds a simple dropdown box at the top admin edit screens allowing you to quickly jump from one page, post, or custom post type to the next without having to return to the respective listing page.

WP Admin Quicknav

Adds a simple quick navigation dropdown box to the top of every admin edit screen.

Mara Noia Extended Page Actions vs WP Admin Quicknav