Rahul Gandhi

This plugin will allow you to assign page template to any custom post type or posts same as Page. The template will be used to display single post in front end.
You can create template same as page template for wordpress pages. You need to select post types where you want to apply template from settings page of this plugin from admin side.
To create template file you need to create .php file in current theme’s directory with Template Name: your template name in comment at first line of your file. Ex. 
You can create template files in subdirectory of current theme folder also. Now WordPress 4.7 has introduced this functionality in core.

Template for Custom Post Types

I have made this plugin very light weight so that users will not face any problems about conflicts with other plugins or Query conflicts. If you like my plugin then rate it 5 starts. I will add some more useful light weight plugins to the WordPress repository soon.



Very light weight and useful plugin

This plugin will allow to create a custom template for any custom post type and posts same as page template. You can assign page template to any post  …

Marco Canestrari

Templatify gives the ability to select <a href="https://developer.wordpress.org/themes/template-files-section/page-template-files/page-templates/#creating-custom-page-templates-for-global-use" rel="nofollow ugc">custom templates</a> for each post type, even custom post types, as for Pages. 
Once you activate Templatify, a “Select Template” box will appear in every post edit screen filled with Pages Templates.
You can also add post type specific templates: just add “Template Post Type” header (similar to “Template Name” header for <a href="https://developer.wordpress.org/themes/template-files-section/page-template-files/page-templates/#creating-custom-page-templates-for-global-use" rel="nofollow ugc">custom templates</a>) on your custom template to see it in the dropdown selector (see Screenshots).
<ul>
<li>Author: <a href="http://www.marcocanestrari.it/" rel="nofollow ugc">Marco Canestrari</a></li>
</ul>

Templatify

This plugin adds Page Templates feature to Posts and Custom Post Types. No settings needed.

Template for Custom Post Types vs Templatify