Mindvalley

This shortcode will allow you to include the content from any posts or pages.
Shortcode usage:
<ul>
<li>[mv_include id=’4′] (best for performance)</li>
<li>[mv_include slug=’the-post-slug’]</li>
<li>[mv_include path=’http://www.example.com/parent-page/sub-page/’]</li>
<li>[mv_include path=’parent-page/sub-page’]</li>
</ul>
The plugin also create a special post type that can be used for content that are for inclusion only.

Mindvalley Include Post Content

Creates shortcode [mv_include] to include content from another post/page.

sebastianost

Usage:
To include a post in another post or page, just add [ipost id=id-of-post] and the post will apper instead of [ipost id=id-of-post]  
You can also fetch the post by permalink: [ipost permalink=”?p=4″]. 
You can also set silence to true/false depending if you want debug information to be printed. Defalut is true.(no debug information)

iPost

Plugin that makes it super easy to include one or more posts in another post.

Mindvalley Include Post Content vs iPost