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.

Nikolay Bachiyski

In WordPress you can set individual templates for pages, which allows you to easily include additional functionality. Unfortunately this feature is not available for posts. Here is where this plugin comes.
After installtion you will be able to choose a template for each post the same way you do with pages.
You can find <a href="https://codex.wordpress.org/Pages#Creating_Your_Own_Page_Templates" rel="nofollow ugc">how to your own templates</a> in the Codex.

Templates for Posts

The same as page templates, but for posts.

What The Template vs Templates for Posts