WP Grim

The free Classic Editor & Classic Widgets plugin helps you to easily disable Gutenberg editor totally everywhere and enables Classic Editor and Classic Widgets.
Classic Editor and Classic Widgets plugin enables old-style WordPress Classic Editor for “Edit Post” with TinyMCE (WYSIWYG), Meta Boxes (Custom Fields), and others. Once activated, this plugin hides all functionality available in the new Gutenberg block editor.
<h3>What does this plugin do?</h3>
<ul>
<li>Disables the Gutenberg Editor</li>
<li>Enables WordPress Classic Editor</li>
<li>Enables Classic Widgets</li>
</ul>
Features
<ul>
<li>Disable Gutenberg totally</li>
<li>Disable Gutenberg for any post type</li>
<li>Editor Switcher</li>
<li>Choose Editor for each Post</li>
<li>Choose Default Editor</li>
<li>Choose Widgets Editor</li>
<li>Full Support Advanced Custom Fields (ACF)</li>
<li>Hide plugin menu item</li>
<li>Enable/Disable frontend Gutenberg styles</li>
<li>WooCommerce compatible</li>
<li>WPML Compatible</li>
<li>Polylang compatible</li>
</ul>
Also, you will be able to use old-style Classic Widgets under Appearance > Widgets and Appearance > Customize > Widgets. There is no need to setup any configuration.
<blockquote>
By default, this plugin hides all functionality available in the new Gutenberg block editor without setting up any extra options.
</blockquote>
<h3>Upgrade to Pro Version</h3>
<a href="https://wpgrim.com/classic-editor-and-classic-widgets-pro/?utm_source=wordpressorg&utm_medium=content&utm_campaign=cew" rel="nofollow ugc">Classic Editor and Classic Widgets PRO</a> plugin provides more additional features. Go to the Next Level with <a href="https://wpgrim.com/classic-editor-and-classic-widgets-pro/?utm_source=wordpressorg&utm_medium=content&utm_campaign=cew" rel="nofollow ugc">Pro Version</a>. Pro plugin works together with this Free Plugin and does not need any re-installation or deactivation of Free version.
Premium Features
<ul>
<li>Choose Editor for User Roles</li>
<li>Choose Editor for Custom Post Types</li>
<li>Remember Last used Editor</li>
<li>Displaying Post States</li>
<li>Exclude Posts/Pages by Autocomplete</li>
<li>Premium Support</li>
</ul>
⭐ <a href="https://wpgrim.com/classic-editor-and-classic-widgets-pro/?utm_source=wordpressorg&utm_medium=get_pro&utm_campaign=cew" rel="nofollow ugc">Get PRO Version Now</a>
<h3>More Powerful Plugins</h3>
<a href="https://wordpress.org/plugins/xml-sitemap-generator-for-google/" rel="ugc">Dynamic XML Sitemaps for Google</a>
Developed with love by <a href="https://wpgrim.com/?utm_source=wordpressorg&utm_medium=direct&utm_campaign=cew" rel="nofollow ugc">WP Grim</a>

Classic Editor and Classic Widgets

Disables Gutenberg editor totally everywhere and enables Classic Editor and Classic Widgets.

digitaldyna

WordPress 5.8 introduced new widgets but many users are not familiar with new widgets or may want to revert to older classic mode of widgets then this plugin will help.
On activation, plugin will enable old classic widgets under Appearance -> Widgets as well under Customizer -> Widgets. There is no extra settings.

Classic Widgets for WP

Classic Widgets for WP will will restore classic mode of widgets under Appearance -> Widgets and under Customizer -> Widgets.

Classic Editor and Classic Widgets vs Classic Widgets for WP