Kevin Leary

Replaces the Biographical Info profile field with the WordPress visual editor, TinyMCE, allowing you to editor an author’s biography using rich text.
Please note that this plugins modifies the output of <code>get_the_author_meta('description')</code> and <code>the_author_meta('description')</code>, apply the same filters used to format content in the main editor.
<h4>Multisite Compatibility</h4>
The Visual Editor Biography plugin is compatibly with WordPress Multisite, just use the <a href="https://codex.wordpress.org/Create_A_Network#WordPress_Plugins" rel="nofollow ugc">Network Activate</a> feature to enable a visual editor on every site. If you only want a visual editor for a specific site then activate the plugin for that site only.

Visual Editor Biography

Works great

Great plugins last and this one still worsk well.

Still word well

Replaces the author "Biographical Info" profile field with a TinyMCE visual editor.

Potsky

This plugin simply adds a <code>button in the rich TinyMCE editor of WordPress to put selection between <code></code> tag.
Don’t hesitate to ask me new features or report bugs on <a href="https://www.potsky.com/code/wordpress-plugins/wordpresscodebutton/" title="Plugin page" rel="nofollow ugc">potsky.com</a> ! 
You can join me on <a href="https://github.com/potsky/WordPressCodeButton" title="GitHub" rel="nofollow ugc">GitHub</a> to add feature, fix bugs,… !

TinyMCE Code Button

This plugin simply adds a  button in the rich TinyMCE editor of Wordpress to put selection between  tag.

Visual Editor Biography vs TinyMCE Code Button