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.

bobbingwide

Use the Children block ( oik-sb/children ) to list children of the current content as links. 
Works for any hierarchical post type which supports page-attributes, such as page.

SB Children block

List children of the current content as links.

Name: Children Index Shortcode Plugin vs SB Children block