This plugin is very simple and straightforward. Just enter ?{list}? on each parent page or post where you want the children listed. Put it anywhere in your content and that is where it will show.
Then in your css..
.subpage-style { Put your styles here };
Easy as pie!

Andy's List Subpages Plugin

Nice and simple plugin that lists the children of a certain page or post in…

ChrisHurst

MyWebsiteAdvisor

use the [children-index] shortcode where you want a list of links to the child pages.
Developer Website: http://MyWebsiteAdvisor.com
Plugin Page: http://mywebsiteadvisor.com/tools/wordpress-plugins/children-index-shortcode/
Video Tutorial: http://mywebsiteadvisor.com/learning/video-tutorials/children-shortcode-plugins-tutorial/
Requirements:
To-do:

Name: Children Index Shortcode Plugin

use the [children-index] shortcode where you want a list of links to the child pages.

Andy's List Subpages Plugin vs Name: Children Index Shortcode Plugin