littlejon

LJ Subpages Widget allows you to display a menu listing subpages from a chosen page.
This plugin was developed as I needed a widget to display a list of subpages in my sidebar. All the other plugins that I found would only display subpages from the current page being displayed.
Features:
<ul>
<li>Will display the subpages of a chosen Parent page (as of version 1.1 will show subpages of current page if required).</li>
<li>Customizable Title with the choice of using the Parent Page Title or writing your own</li>
<li>Compatible with subpages of subpages. You have the option of displaying Subpages of the Subpages being displayed (This is theme dependant, your theme must support submenus in the sidebar for this option to function as expected)</li>
<li>If there are no subpages to display the widget outputs nothing rather then leaving a heading without any content</li>
</ul>
This widget was built using the new WordPress Widget API and as such it supports multi instance copies. For this reason it means that this widget is only supported by WordPress 2.8 and above. If you have a requirement for this plugin for a version of WordPress lower then 2.8 please contact me on the plugins homepage via a comment.

LJ Subpages Widget

LJ Subpages Widget allows you to display a menu listing subpages from a chosen page.

brendaegeland

A common web design pattern is to have a primary navigation with the top level pages, and then a separate 
navigation element on each page that shows only those pages related to a common top-most page. This widget helps 
to build those secondary navigation elements.
If your page structure was like this:
<ul>
<li>Home</li>
<li>About</li>
<li>— Our History</li>
<li>— Our Staff</li>
<li>— — Employment Opportunities</li>
<li>Services</li>
<li>— Widget Development</li>
<li>— Gadget Deployment</li>
<li>Contact Us</li>
</ul>
and you added the widget with its default settings to a sidebar, it would create a list like this:
<ul>
<li>About</li>
<li>Our History</li>
<li>Our Staff</li>
<li>— Employment Opportunities</li>
</ul>
on any of the pages in the About subtree. Notice that the top-most ancestor, About, is included as the first element of the list.
<h4>Options</h4>
<ol>
<li>Title. The widget title. If left blank, it defaults to the title of the top ancestor page.</li>
<li>Show Title. Maybe you don’t want a title. Just turn it off here.</li>
<li>Top Page. You can select one of your pages to be the top page, or you can choose Default, which determines the top-most ancestor of the page being displayed.</li>
<li>Menu Class. Gets applied to the outermost <ul> element.</li>
<li>Before Links. HTML to be inserted before links in the list.</li>
<li>After Links. HTML to be inserted after links in the list.</li>
</ol>

Subpages in Context

Lists pages and subpages for a given page, or the top ancestor of the current page and all of the ancestor's descendants

LJ Subpages Widget vs Subpages in Context