Chris Lanphear

A very simple plugin to disable the Block Editor (formerly known as Gutenberg) and restore the classic WordPress editing experience. 
There are no settings. If Guten-bye is active, the Block Editor will be disabled for all registered post types and the original 
“Classic” editor will be used in its place.

Gutenbye

A very simple plugin to disable the Block Editor (formerly known as Gutenberg) and restore the classic WordPress editing experience.

typop

Modern editor helps you to edit posts/pages with ligthning fast. You will never loose your focus again when you update/publish a post.
Features 
+ Save with ajax without refresh 
+ 3X faster than classic editor when saving/updating 
+ Saving cmd+s or ctrl+s without pain 
+ ACF support 
+ New fixed side inspector design for meta boxes 
+ Revision meta box design improvements

Modern Editor

Modern user interface for edit screens of posts and pages. Never loose your focus again when you save/publish a post. Look ma no refresh!

Gutenbye vs Modern Editor