thewebist

A widget for displaying a list of subpage links. The list remains consistent regardless of where you are in the hierarchy.
Other features include:
<ul>
<li>Widget displays only on pages with subpages or on subpages.</li>
<li>List title is a link to the main page parent.</li>
<li>You can specify the link text for the list title, or you can completely hide it.</li>
<li>Sort subpages by Menu Order or Page Title.</li>
<li>Specify the depth of pages shown (all in hierarchy, all in flat list, 1 level, 2 levels, etc.)</li>
<li>Presentation utilizes minimal markup to allow for easy styling via your theme’s CSS.</li>
</ul>

WenderHost Subpages Widget

A widget for displaying a list of subpage links. The list remains consistent regardless of where you are in the hierarchy.

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

WenderHost Subpages Widget vs Parent Page Link