Keir Whitaker

WP-Blocks a simple plugin designed to help you edit discrete bits of template content via the WordPress admin interface. A good example would be your sidebar bio, footer copyright notice or a simple events listing. It’s not intended to be tied in with posts and pages like some other plugins.
Here’s what you need to know:
<ul>
<li>WP-Blocks can be accessed via the Settings menu in the WordPress admin (I may move this in time)</li>
<li>The plugin requires PHP5 (apologies to those on PHP4)</li>
<li>I have developed and tested this plugin on WordPress Version 3.0 and above</li>
<li>It “should” work on earlier versions, as far as I know I haven’t used any brand spanking new API calls</li>
<li>Every “block”, whether visible or not will incur a database query so use of a caching plugin is encouraged</li>
</ul>

WP-Blocks

WP-Blocks allows you to edit non page and post content. Requires PHP5

Joni Halabi

Important notice!
Due to a shift in my personal and professional priorities, I have decided to take a step back from development. As a result, this plugin is no longer being actively maintained. You are welcome to <a href="https://github.com/thatdevgirl/block-controller" rel="nofollow ugc">fork it</a> and create your own updates. If you do so, please credit me as the original author. (I would also love to hear about this plugin’s new life!)
All the best, Joni.
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This WordPress plugin provides site administrators with the ability to turn on and off specific post editor (Gutenberg) content blocks.

Block Controller

The Block auditor section alone deserves 5 stars. 

Thank you. 

Absolutely a 5 star plugin !

[Deprecated!] Allow site administrators to control editor access to content blocks.

WP-Blocks vs Block Controller