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.

WebFactory

Manage and replace sidebars and other classic widget areas on your site with Custom Sidebars, a flexible widget area manager.
Make custom sidebar configurations and be able to choose what classic widgets display on each page or post of your site.
<ul>
<li>Need to make a widget sticky or fixed? Try our free <a href="https://wordpress.org/plugins/sticky-menu-or-anything-on-scroll/" rel="ugc">WP Sticky Anything</a> plugin.</li>
</ul>
Custom Sidebars works ONLY with the classic widgets screen that was used in WordPress before version 5.8. If you want to use it with version 5.8 (and above) you have to install the official <a href="https://wordpress.org/plugins/classic-widgets/" rel="ugc">Classic Widgets</a> plugin, or enable the classic widgets interface yourself. Once the classic widgets screen is activated the plugin will work the same as before.
<ul>
<li>Having problems setting up SSL or generating an SSL certificate? Install the free <a href="https://wordpress.org/plugins/wp-force-ssl/" rel="ugc">WP Force SSL</a> plugin.</li>
</ul>
<h4>Display Different Sidebars on Pages and Posts</h4>
Custom Sidebars allows you to dynamically display custom widget configurations on any page, post, category, post type, or archive page.
★★★★★
<blockquote>
“Custom Sidebars will go on my “essential plugins” list from now on. I am pleased by how easy it was to figure out and by how many options are available in the free version.” – <a href="https://profiles.wordpress.org/monkeyhateclean" rel="nofollow ugc">monkeyhateclean</a>
</blockquote>
★★★★★
<blockquote>
“This plugin does exactly what it says. It’s light, integrates well into WordPress and gives you tons of possibilities.” – <a href="https://profiles.wordpress.org/darknova11" rel="nofollow ugc">DarkNova</a>
</blockquote>
Every part of Custom Sidebars integrates seamlessly with the Widgets menu for simplicity and control. No confusing settings pages or added menu items, just simple core integration.
<h4>A Simple Flexible Sidebar Manager</h4>
** Custom Sidebars Includes: ** 
* Unlimited custom widget configurations 
* Set custom widgets for individual posts and pages, categories, post types, and archives 
* Seamless integration with the WordPress Widgets menu 
* Works with well-coded themes and doesn’t slow down your site 
* Set individual widget visibility – for guests, by user role, by post type, for special pages or categories 
* Author specific sidebars – display a custom sidebar for each of your authors 
* Clone and sync widget settings – quickly edit complex configurations 
* Import and export custom sidebars – backup and share sidebars
Install Custom Sidebars and see for yourself why it’s the most popular widget extension plugin available for WordPress with over 200,000 active installs.
<h3>Contact and Credits</h3>
Original development completed by <a href="http://marquex.es/" rel="nofollow ugc">Javier Marquez</a>.

Custom Sidebars – Dynamic Sidebar Classic Widget Area Manager

Flexible sidebars for custom classic widget configurations on any page or post. Create custom sidebars with ease!

Classic Editor and Classic Widgets vs Custom Sidebars – Dynamic Sidebar Classic Widget Area Manager