Sparanoid

Disable WYSIWYG sets <code>user_can_richedit</code> to <code>false</code> that disable TinyMCE Visual Editor (WYSIWYG editor) totally completely permanently forever. This plugin also works fine with multisite enabled WordPress (aka. WordPress Mu).
More information please visit my <a href="https://sparanoid.com/work/disable-wysiwyg/" rel="nofollow ugc">site</a>.

Disable WYSIWYG

Disable TinyMCE Visual Editor (WYSIWYG editor) totally completely permanently forever

sekishi

Enable to simplify the selection of the enclosing shortcode and html element on TinyMCE richedit. This is simple plugin. but it’s a very useful plugin.
Demonstration http://lab.planetleaf.com/development/wordpress/write-wordpress-plugin.html

Disable WYSIWYG vs Easy Block Selector