Matt Martz

Remove and restructure the ‘Howdy’ line. Props to Ozh for <a href="http://planetozh.com/blog/my-projects/no-howdy-a-plugin-for-wordpress/" rel="nofollow ugc">No Howdy</a>.
People have always seemed to complain about the ‘Howdy’ on the admin pages. I personally don’t care about the use of the word but think that the ‘Howdy area’ could be more functional and user friendly.
<h3>Usage</h3>
<ol>
<li>Just activate and enjoy! No configuration required.</li>
</ol>

Better Howdy

Remove and restructure the 'Howdy' line by changing 'Howdy' to 'Logged in as'.

Asif Ali

Description: This plugin will Replace “Howdy” in the top right corner with “Welcome” of your WordPress dashboard.
Feature
<ul>
<li>This plugin will Replace “Howdy” in the top right corner with “Welcome” of your WordPress dashboard.</li>
</ul>

WP Easy Replace Howdy

Description: This plugin will Replace "Howdy" in the top right corner with "Welcome" of your WordPress dashboard.

Better Howdy vs WP Easy Replace Howdy