Carl-Fredrik Her?

airspray

The Page in Widget widget lets you display a page content inside a widget. This way you have more control how the content is displayed, and it’s much easier than hacking your own HTML.
The output is filtered through the_content-filter which means that paragraph tags are added, just as any other post or page.

Page in Widget

A tiny plugin that displays a page content in a widget.

Tobias Nyholm

This plugin creates a widget menu of the pages related to the current page. You define where in the page hierarchy 
to be the root of the menu, and you define the depth. Now you have a simple and dynamic navigation menu. 
The benefits with this plugin compared with a predefined menu is that this menu can change from one page to an other. 
For more information see installation page or the 
<a href="http://www.webfish.se/wp/plugins/dynamic-subpages" title="Webfish - WordPress plugin" rel="nofollow ugc">Webfish</a> homepage.

Dynamic Supages

Displays subpages for the current page. Set the depth and starting level (in hierarchy) and you are good to go.

Page in Widget vs Dynamic Supages