wadadanet

WYSIWYG(What You See Is What You Get.) HTML5 Editor. 
Plugin which edits a Page directly from a preview screen.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/VVfohIyBaww?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<a href="http://www.coffee-break-designs.com/plugin/word-press/smart-editor/" title="Official site" rel="nofollow ugc">official site</a>.
日本語: 
本当のWYSIWYGエディターです。 
だって、プレビュー画面で編集しているんだもん。 
詳しくは 
<a href="http://www.coffee-break-designs.com/plugin/word-press/smart-editor/" title="Official site" rel="nofollow ugc">official site</a>.
<h3>Arbitrary section</h3>
Since there is no contribution, it cannot develop at all. (TT)

Smart Editor

WYSIWYG(What You See Is What You Get.) HTML5 Editor,

Coen Jacobs

Adds a custom post type that can be easily inserted at multiple spots, including widgets. Easy way to create WYSIWYG widgets.
This plugin is still alive. It has been tested to run on the most recent WordPress version and it still works fine. Future versions will bring more features and an updated code base.
Please use the <a href="https://wordpress.org/support/plugin/smart-wysiwyg-blocks-of-content" rel="ugc">support forums</a> to request support in case you have some kind of trouble. You can contribute to the plugin via the <a href="https://github.com/coenjacobs/smart-wysiwyg-blocks-of-content" rel="nofollow ugc">GitHub repository</a>. Pull requests or bug reports are very welcome there.

Smart WYSIWYG Blocks Of Content

Adds a custom post type that can be easily inserted at multiple spots, including widgets. Easy way to create WYSIWYG widgets.

Smart Editor vs Smart WYSIWYG Blocks Of Content