Backie

Allows users to edit the internal WordPress options without digging about the database. If you don’t know what that means or think it’s a better interface for configuring your WordPress install this isn’t for you. You will proably end up breaking your WordPress install. This plugin has a very limited use.
Requires PHP 5.2 or above

Option Editor

Allows users to edit the internal WordPress options without digging about the database.

Davinder Singh

WordPress Custom Settings enables you to save your custom settings like social media links some html block a small text line upload a logo and file etc.
To minimal use of widgets it gives you a options to create sections for categorization of your fields you can edit delete your sections also give you a interface to add multiple fields and manage them.you can call all the fields using shortcode as well.
<a href="https://github.com/honeydhi/WordPress-Theme-Settings/issues" title="Support WPC on GitHub" rel="nofollow ugc">Support WPC on GitHub</a> your support is valuable.
Major features in WordPress Custom Settings include:
<ul>
<li>User and Developer friendly</li>
<li>Section Management available</li>
<li>Field Management available</li>
<li>shortcode to get values</li>
</ul>

WordPress Custom Settings

Installed on WordPress 4.4 and got the following error:
Warning: Invalid argument supplied for foreach() in /home/delamanorg/public_html/wp-content/plugins/custom-settings/wpc.php on line 88



Warning: Invalid argument supplied for foreach()

WordPress Custom Settings enables to save your custom settings like social media links some html block , text line, upload logo and files easily.

Option Editor vs WordPress Custom Settings