James Irving-Swift

Electric Studio

Adds a filter in your wp-admin that allows you to choose a parent page so that only the children of that page will be shown. Very useful if you have a lot of pages! 
Thank you to Brian Krogsgard for the changes in version 1.3 (Twitter: @Krogsgard)

Filter Pages by parent in admin

Filter pages in the wp-admin by their parent pages

PowieT

This widget plugin will display a backlink to the parent page at the end of subpages
<ul>
<li>Only on subpages</li>
<li>at the end of the page</li>
<li>link to the parent page</li>
</ul>

Parent Page Link

This widget plugin will display a backlink to the parent page at the end of subpages

Filter Pages by parent in admin vs Parent Page Link