Kevin van Hengst

This plugin will show you what template file is being used for a page in the admin page overview. No more need to go to the edit view of the page, or use other tools.

What The Template

A very simple plugin that displays what template file is used for a page in the admin page overview.

Spencer Brown

This plugin offers you the ability to add custom page template files to your WordPress installation without having to manage 
theme folders or use a ftp client. Simply upload the custom template file you have been working on and it will be registered 
with WordPress as a template option for your pages. This plugin is straight to the point and has a clean user interface using 
W3.CSS.
Plugin menu is located under ‘Appearance’ menu.
Attribution: This post online and code on github by wpexplorer: 
http://www.wpexplorer.com/wordpress-page-templates-plugin/ 
https://github.com/wpexplorer/page-templater

Custom Page Templates Setup

Easily add custom page templates without having to use ftp or keep track of changing themes.

What The Template vs Custom Page Templates Setup