Sandy McFadden

Generic parent child custom post type is simply a plugin that gives an example of how to create two custom post types where one is the parent and you can assign any number child posts to it.
The two post types are called Parents and Children. As an example you could call them Car Dealership and Cars and assign a bunch of cars to a dealership.
There is an example template file included which displays the parent post as well as a list of all the children posts assigned to it.
It’s really more of a starting point but it does work.
Requires WordPress 3.0 and PHP 5.

Generic Parent Child Custom Post Types

Generic parent child custom post type is simply a plugin that gives an example of how to create two custom post types where one is the parent and you  …

James Irving-Swift

Electric Studio

Adds a filter in your wp-admin that allows you to choose a parent page so that only the children of that page will be shown. Very useful if you have a lot of pages! 
Thank you to Brian Krogsgard for the changes in version 1.3 (Twitter: @Krogsgard)

Filter Pages by parent in admin

Filter pages in the wp-admin by their parent pages

Generic Parent Child Custom Post Types vs Filter Pages by parent in admin