Nhat Huynh Van

<blockquote>
It’s hard to change if you love something!
</blockquote>
I’ve been using the original/classic editor for over 10 years now and the experience has always been 100% smooth and the original Visual Editor was awesome. 
I like to keep that to myself and I’m sure there are some people like me who like the classic, easy to use and simple thing.
This plugin disables the new Gutenberg Editor (Block Editor) and replaces it with the Classic Editor. 
The Disable Gutenberg plugin restores the classic (original) WordPress editor and the “Edit Post” screen.
Features
<ul>
<li>Classic Editor</li>
<li>Disable Block Widgets and restore Classic Widgets</li>
<li>Enable/disable frontend Gutenberg stylesheet</li>
</ul>
<blockquote>
Works same as Classic Editor plugin, but lightweight, simple and super fast
</blockquote>
Easy to Use
<ul>
<li>Super simple</li>
<li>Clean, secure code</li>
<li>Built with the WordPress API</li>
<li>Lightweight, fast and flexible</li>
<li>Works great with other WordPress plugins</li>
<li>Focused on flexibility, performance, and security</li>
</ul>

Relive Classic

Plugin Relive Classic is help you use editor, widgets in classic style and disable Gutenberg.

Ravi A. Vadhel

Have you upgraded WordPress and stucked with the new editor? Don’t worry, Just install the Remove Gutenberg plugin and enjoy the Classic editor. Additionally, There is an option in Reading settings from you can enable/disable the feature.

If you like this plugin, please write a few words about it at wordpress.org. Your opinion will help other people.

<a href="https://wordpress.org/support/plugin/restore-classic-editor/reviews/?rate=5&filter=5#new-post" rel="ugc">Rate plugin</a>

Remove Gutenberg

This is very light weight and perfect plugin to remove Gutenberg and restore the old classic editor. Once update the WordPress, it was like headache to manage composer and other things. Thanks to the developer to resolve my issue. :)

Perfect

Remove Gutenberg Editor and get back to old version of editor. This provides Original Classic Editor and more.

Relive Classic vs Remove Gutenberg