Utkarsh Kukreti

This plugin enables embedding of multiple stylesheets and javascript files on a per-post basis.
Multiple file names should be separated by a ‘,’. Extra whitespace after and before a ‘,’ are automatically ignored.
Relative paths to files are automatically prefixed by the /css or /js. These settings can be customized by editing values of the variables $css_folder and $js_folder in the plugin file.
Absolute paths are directly hotlinked.

Include Custom Files

Enables embedding of multiple stylesheets and javascript files on a per-post basis.

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This plugin allows you to include extra JavaScript or CSS files in your WordPress page.
You can:
<ul>
<li>Include as many as you like.</li>
<li>Choose whether files are to be included on the front-end or the back-end.</li>
<li>Choose where to include them in the header or the footer.</li>
<li>Choose conditions to use for inclusion (logged-in users only, admin users only, front page only).</li>
<li>Choose conditions of you can add.</li>
</ul>
Please if you want to add conditions. 
For example add filter:
<pre><code>add_filter( 'jcim_condition' , 'my_conditions' );
function my_conditions( ) {
 $conditions = array(
 array(
 "code" => "current_user_can",
 "val" => "edit_themes",
 "desc" => "Only edit theme role have user",
 "help_link" => "https://codex.wordpress.org/Function_Reference/current_user_can"
 ),
 array(
 "code" => "is_admin",
 "val" => "",
 "desc" => "Only admin screen",
 "help_link" => ""
 ),
 );
 return $conditions;
}
</code></pre>
<h3>日本語でのご説明</h3>
このプラグインは、よくごちゃごちゃになってしまうjavascriptファイルの読み込みとcssファイルの読み込みを、 
管理画面だけ、またはサイトだけに読み込むファイルを、１箇所で管理するためのプラグインです。 
サイトで何のファイルを読み込んでいるのか、すっきり。

Js Css Include Manager

This plug-in is a will clean the file management. You can only manage the screen. You can also only site the screen.

Include Custom Files vs Js Css Include Manager