fred91

Simplicy post view
is a widget that displays one or more items to your sidebar with several options:
-Select an item or category
-The item number is displayed (if a category is selected)
-Display of the title and customize size 
-Display of the excerpt or not
-Character limit in the extract (if the option Show the extract is checked)
-Display of miniature or not
-Dimensions of the miniature in order to fit your theme (if the option Show thumbnails is checked)
Shortcode

Easily add items to your pages and post through shortcode

Languages
<ul>
<li>
French fr_FR
</li>
<li>
English – en_EN
</li>
<li>
Spanish – es_ES (Thanks to Andrew Kurtis http://www.webhostinghub.com)
</li>
</ul>

Simplicy post view

viewed Requires at least: 3.0 Tested up to: 4.6 Stable tag: 0.07 License: GPLv2 or later License URI: http://www.gnu.org/licenses/gpl-2.0.

munishsandy

Select Templates For Posts and Custom Post Types. It provides a drop-down to select different templates for posts and custom post types in post edit screen. Selected templates will override single.php for specified post. You can use both page and custom templates.
Use simple template name in your template files.
Use Page Templates:
<pre><code><?php
/*
Template Name: Your Template name
*/
?>
</code></pre>
Use Your Custom Templates:
<pre><code><?php
/*
Post Template Name: Your Template name
*/
?>
</code></pre>
<h3>How to use</h3>
<ol>
<li>First Activate Plugin.</li>
<li>From Post Template admin menu , allow post template selector for post or custom post</li>
<li>Then select template from post edit screen.</li>
</ol>
<h3>Minimum requirements for Post Template Select</h3>
<ul>
<li>WordPress 4.1+</li>
<li>PHP 5.x</li>
<li>MySQL 5.x</li>
</ul>

Post Template Select

Simple and easy to use, works without flaws.

Really great plugin

Provides a Dropdown to select Templates For Posts and Custom Post Types.

Simplicy post view vs Post Template Select