This plugin disables the visual editor for all users across the whole site. You could also remove the wp-includes/js/tinymce/ directory.
Adds an extra button to the Visual Rich Editor (aka wysiwyg, tinymce) to show advanced features.
Stops the WordPress WYSIWYG editor from “cleaning” <pre> elements
Prevent spaces and HTML entities (e.g. > or ') from disappearing when editing posts with TinyMCE.
Easily disables the visual editor globally.
Enables TinyMCE for the title when writing a post or page.
Add Georgian Keyboard Support to Post, Page and Comment forms fields