What is the name of the post control panel?

Question

WYSIWYG

Good afternoon!
I am writing a blog on MERN, and here I have a problem: is there a plugin, or a library for creating a post editing panel? I don’t know exactly what it is called, but here it is:

Or should I write it myself? I searched on the internet but couldn't find it anywhere.

Answer 1

Tinymce or ckeditor or illi summernote