Gabriel De la Hoz

Easy Custom Admin Notification allows WordPress administrators to create and manage custom notifications displayed on the dashboard. With a user-friendly interface, you can configure notifications with rich text, gradient backgrounds, and targeted user roles. Perfect for announcements, reminders, or alerts.
Features: 
– Create multiple notifications with individual settings. 
– Notifications can be enabled/disabled 
– Rich text editor (TinyMCE) for formatting notification messages. 
– Customizable gradient backgrounds for each notification. 
– Choose which user roles see each notification. 
– Flexible dismiss behavior: persistent, session-based, or always visible. 
– Modern, responsive UI with accordion-style settings panel.
Ideal for site administrators who need to communicate important information to specific users in a visually appealing way.

Easy Custom Admin Notification

Display custom admin notifications on the WordPress dashboard with flexible styling and user role targeting.

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.

Easy Custom Admin Notification vs Restrict Media Library Access