Bill Erickson

This widget will dynamically list a section’s subpages. When on a page, it will find the section’s top level page and list its children.
It can also include the current page’s subpages in listing.
You can customize the listing with the following filters: 
be_subpages_widget_args – modifies the arguments passed to wp_list_pages 
be_subpages_widget_display_override – determine when the widget is displayed 
be_subpages_widget_override_post – change the current post 
be_subpages_widget_parents – customize the hierarchy used in querying subpages 
be_subpages_widget_title – customize the widget title 
be_subpages_page_title – customize the page title 
be_subpages_widget_class – customize the classes applied to pages
Contributors: 
– <a href="https://profiles.wordpress.org/billerickson" rel="nofollow ugc">billerickson</a> 
– <a href="https://profiles.wordpress.org/scil/" rel="nofollow ugc">scil</a> 
– <a href="https://github.com/jb510" rel="nofollow ugc">jb510</a> 
– <a href="https://github.com/fabiancz" rel="nofollow ugc">fabiancz</a>
<a href="http://www.billerickson.net/contributions/plugins/" rel="nofollow ugc">View all plugins by Bill Erickson</a>

BE Subpages Widget

Prefect plugin.  I was using a custom-coded shortcode to do this, but was having trouble getting the children/grandchildren page lists to appear outside of the parent list's li element.  The default in this plugin to not nest subpages is perfect for the style I need to set up.  Thanks!



Perfect

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.

BE Subpages Widget vs WenderHost Subpages Widget