Alvaro Gómez

This plugin restricts access for Authors and Contributors so they can only see their own Media Library uploads.
This has two main uses: Make it easier for Authors to locate their own uploads when Media Libraries grow very big and prevent Authors from using or downloading media that belongs to other users.
Admins and Editors will still be able to see everyone’s uploads.

Restrict Media Library Access

Muy útil

This plugin works fine in WP 5.7.1 

It's just the example code from the official WP docs for the ajax_query_attachments_args filter, with a line added to check if the current user is an administrator. It's very simple.

There's no reason this plugin shouldn't work in an up-to-date WP installation

works in WP 5.7.1

Restricts access for Authors and Contributors so they can only see their own Media Library uploads.

itthinx

Kento

Widgets Control is a toolbox that features visibility management for all widgets, sidebars, sections of content and content blocks. 
It allows to show widgets and sidebars based on conditions – you can choose to show them only on certain pages or exclude them from being displayed.
Sections of content can also be restricted by using this plugin’s <code>[widgets_control]</code> shortcode.
You can also define new WYSIWYG Content Blocks that can be used in widgets, sidebars and with shortcodes.
For each widget and sidebar, you can decide where it should be displayed:
<ul>
<li>show it on all pages</li>
<li>show it on some pages</li>
<li>show it on all except some pages</li>
</ul>
… you can target small, medium or large screens for mobile, tablet and desktop users.
To include or exclude pages, the plugin allows you to indicate page ids, titles or slugs and tokens that identify the front page, categories, tags, etc.
In addition to page ids, titles and slugs, these tokens can be used to determine where a widget should or should not be displayed:
<pre><code>[home] [front] [single] [page] [category] ...
</code></pre>
On sites using <a href="https://wpml.org" rel="nofollow ugc">WPML</a>, widgets can be shown conditionally based on the language viewed.
The <code>[widgets_control]</code> shortcode is used to embed content and show it conditionally similar to the visibility options used for widgets and sidebars. 
For example, <code>[widgets_control conditions="{archive}"]This text is shown only when the content is displayed on an archive page.[/widgets_control]</code>.
Widgets Control also provides flexible WYSIWYG Content Blocks and a proper widget that can be used to place them in sidebars, 
the <code>[widgets_control_content]</code> shortcode to embed freely created blocks anywhere on your pages and 
API functions that allow to include these blocks in PHP templates of your theme. 
For even more flexible control, use <a href="https://www.itthinx.com/shop/widgets-control-pro/" rel="nofollow ugc">Widgets Control Pro</a> which provides freely definable additional sidebars.
Use display conditions to show or hide content on devices with small, medium or large displays, useful to adapt the display to mobile, tablet and desktop viewers.
See the <a href="http://docs.itthinx.com/document/widgets-control/" rel="nofollow ugc">documentation</a> for more details.
Widgets Control works with virtually any widget. It is compatible with lots of plugins, among these it has been tested with:
<ul>
<li><a href="https://wordpress.org/plugins/groups/" rel="ugc">Groups</a></li>
<li><a href="https://wordpress.org/plugins/affiliates/" rel="ugc">Affiliates</a></li>
<li><a href="https://wordpress.org/plugins/decent-comments/" rel="ugc">Decent Comments</a></li>
<li><a href="https://wordpress.org/plugins/woocommerce/" rel="ugc">WooCommerce</a></li>
<li><a href="https://www.itthinx.com/shop/woocommerce-product-search/" rel="nofollow ugc">WooCommerce Product Search</a></li>
<li><a href="https://wordpress.org/plugins/search-live/" rel="ugc">Search Live</a></li>
<li><a href="https://wordpress.org/plugins/documentation/" rel="ugc">Documentation</a></li>
<li><a href="https://wordpress.org/plugins/events-manager/" rel="ugc">Events Manager</a></li>
<li><a href="https://buddypress.org" rel="nofollow ugc">BuddyPress</a></li>
<li><a href="https://wordpress.org/plugins/bbpress/" rel="ugc">bbPress</a></li>
<li><a href="https://wordpress.org/plugins/ninja-forms" rel="ugc">Ninja Forms</a></li>
<li><a href="https://gravityforms.com/" rel="nofollow ugc">Gravity Forms</a></li>
<li><a href="https://wordpress.org/plugins/jetpack/" rel="ugc">Jetpack</a></li>
<li><a href="https://wpml.org" rel="nofollow ugc">WPML</a></li>
<li><a href="https://wordpress.org/plugins/nextgen-gallery/" rel="ugc">NextGEN Gallery</a></li>
<li><a href="https://wordpress.org/plugins/image-widget/" rel="ugc">Image Widget</a></li>
<li><a href="https://wordpress.org/plugins/mailchimp-for-wp/" rel="ugc">MailChimp for WordPress</a></li>
<li><a href="https://wordpress.org/plugins/the-events-calendar/" rel="ugc">The Events Calendar</a></li>
<li><a href="https://wordpress.org/plugins/wysija-newsletters" rel="ugc">MailPoet Newsletters</a></li>
<li><a href="https://wordpress.org/plugins/elementor/" rel="ugc">Elementor</a></li>
</ul>
<h3>Widgets Control Pro</h3>
Our <a href="https://www.itthinx.com/shop/widgets-control-pro/" rel="nofollow ugc">Widgets Control Pro</a> provides additional features:
<ul>
<li>Conditions based on the viewed post type. For example, show a widget only on posts with <code>[type:post]</code> or only on product pages with <code>[type:product]</code></li>
<li>Show or hide widgets on full page hierarchies, where conditions are based on a parent page and all its child pages: <code>some-page/*</code></li>
<li>Show or hide widgets based on user roles. For example, show a widget to subscribers and customers only: <code>[role:subscriber,customer]</code></li>
<li>Show or hide widgets based on a user’s group membership with <a href="https://wordpress.org/plugins/groups/" rel="ugc">Groups</a>. For example, show a widget only to registered users with <code>[group:Registered]</code> or show a widget only to users in a Premium group using <code>[group:Premium]</code></li>
<li>Show or hide widgets for archive pages of a specific post type. For example, <code>[archive:product]</code> can be used to show widgets for the WooCommerce shop page and product archives only.</li>
<li>Allows to specify exclusions. For example, to show a widget only on pages, but exclude it from being shown on one or more specific pages.</li>
<li>Provides additional sidebar features that allow to define any number of custom sidebars, flexible placement based on common locations, including above and below content, the comment form, menus and other sidebars, the <code>[widgets_control_sidebar]</code> shortcode to embed them in content on your pages and API functions to use them in your theme’s templates.</li>
</ul>
<h3>Feedback</h3>
Feedback is welcome!
If you need help, have problems, want to leave feedback or want to provide constructive criticism, please do so here at the <a href="https://www.itthinx.com/plugins/widgets-control/" rel="nofollow ugc">Widgets Control</a> plugin page.
Please try to solve problems there before you rate this plugin or say it doesn’t work. There goes a lot of work into providing you with quality plugins!
Please help with your feedback and we’re also grateful if you help spread the word about this plugin.
Thanks!
<h4>Twitter</h4>
Follow <a href="https://twitter.com/itthinx" rel="nofollow ugc">@itthinx</a> on Twitter for updates on this and other plugins.

Widgets Control

A Widget toolbox that adds visibility management and helps to control where widgets, sidebars and content are shown efficiently.

Restrict Media Library Access vs Widgets Control