Alfredo Barbosa

Customizing provides a nice interface for you to create custom post types, taxonomies and fields (meta boxes).
You’ll find the Customizing tools in the ‘Customizing’ menu.
In the ‘Custom Box’ screen, you may show and hide groups of fields, and order them the way you like.
All the settings are based on the WordPress API settings, therefore, the oficial guides apply to them.
<h3>Known Problems</h3>
<ul>
<li>Custom boxes and user boxes won’t work if you have taxonomy terms with quotes.</li>
</ul>

Customizing – Post Types, Taxonomies & Fields

Custom post types, taxonomies and fields for WordPress.

KrishaWeb

Dilip Bheda

Pratik Gandhi

Girish Panchal

This plugin gives flexibility to user to change posts from one post type to another. Also users can change posts from post type to page.
Features 
• Easy installation 
• Post to other post type or page. 
• Free support
Checkout the advanced features of Post Type Transfer: 
• It provides functionality enable/disable the feature for certain post type. 
• It also provides functionality to transfer the taxonomy while transferring the post to other post type. You can create new taxonomy or use the current one.
<a href="https://codecanyon.net/item/post-type-transfer-pro/21585540" rel="nofollow ugc">Get the Post Type Transfer Pro</a>
<h4>Supported Types</h4>
The plugin will help you to transfer any post’s post type to other post type. It will also allow custom post type. Invisible post types like revision, menu and attachment are purposely excluded

Post Type Transfer

Easy to use

A simple way to change a post's post-type in WordPress

Customizing – Post Types, Taxonomies & Fields vs Post Type Transfer