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

Stephen AfamO

This plugin allows you to use any HTML or PHP file as the template for any page or post.
Simply upload the file and select it. 
You can upload custom js and css files into the media library and link to them from the HTML file.
Options:
<ul>
<li>Overwrite All: You overwrite the entire theme and use your custom file</li>
<li>Overwrite Content: Keeps the header, footer, sidebar, e.t.c. Simply overwrites the body of the page or post</li>
<li>Above Content: Your custom content is simply added to the top of the page content</li>
<li>Below Content: You custom content is placed just beneath the page content.</li>
</ul>
<h4>Adding support for custom post types</h4>
By default the pulugin works with pages and posts, however, go to the settings to enable it on any other registered post type.
use the <code>hppp_post_types</code> filter to add more post types.
Like this:
<pre><code> public function post_type_modify ($post_types) {
 $post_types[] = 'custom_post_type';
 return $post_types;
 }

 add_filter( 'hppp_post_types', 'post_type_modify' );
</code></pre>

Custom HTML/PHP Post Templates

I use this on a couple sites I own and it works wonderfully.
I hope you can find it useful. 

Works like a charm

Use your HTML or PHP files for any page or post.

Simplicy post view vs Custom HTML/PHP Post Templates